You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How may I aid you?

USER: Yesterday I have booked a ticket for Chicago but your agent misplaced my origin code from Phoenix to Boston. can you please change an existing reservation?

ASSISTANT: Sure, may I know your good name?

USER: My name is Sandra Scott.

ASSISTANT: Please wait for a while. I will check the reservation status.

USER: Sure, I will wait.

ASSISTANT: Thanks for your patience. There was no reservation found on your name.

USER: That's not a problem.

ASSISTANT: Thank you for opting us.

USER: Thanks for your information.