user: Hi! Any reason why my flight for this afternoon is already delayed of 1hr20min?
agent: Is it the VS1 you're due on Sara?
user: Yes.
agent: This is due to one of our aircraft being unexpectedly taken out of service Sara. We've tried to avoid a delay but unfortunately despite our best efforts it's been unavoidable. sorry for any inconvenience.
user: Thank you for the explanation! With the delay, until what time the check-in will be open?
agent: It will stay open until 60minutes before the new departure.

The customer is asking whether there is any reason why his @VirginAtlantic flight for that afternoon is already delayed of 1hr20min and asks with the delay, until what time the check-in will be open. The agent informs that the delay is due to one of their aircraft being unexpectedly taken out of service.
### Instruction: Below is a conversation between a human and an AI agent. Write a summary of the conversation.

### Input:
user: Hi! Any reason why my flight for this afternoon is already delayed of 1hr20min?
agent: Is it the VS1 you're due on Sara?
user: Yes.
agent: This is due to one of our aircraft being unexpectedly taken out of service Sara. We've tried to avoid a delay but unfortunately despite our best efforts it's been unavoidable. sorry for any inconvenience.
user: Thank you for the explanation! With the delay, until what time the check-in will be open?
agent: It will stay open until 60minutes before the new departure.

### Response:
The customer is asking whether there is any reason why his @VirginAtlantic flight for that afternoon is already delayed of 1hr20min and asks with the delay, until what time the check-in will be open. The agent informs that the delay is due to one of their aircraft being unexpectedly taken out of service.