You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Betty Collins here. I am looking to change my reservation. Can you please help me out with that?

ASSISTANT: Sure, please wait for a moment.

USER: Thank you, take your time.

ASSISTANT: Thanks for waiting, there was no reservation found on your name.

USER: Oh! I think the ticket was not booked due to server issue. Anyway, thank you for the information.

ASSISTANT: Thank you for choosing us.