You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Christine Gonzalez. I decided to cancel my reservation, can you help in that?

ASSISTANT: Sure, please wait a moment I'll check the details of your reservation and revert you.

USER: Sure.

ASSISTANT: Sorry to say, I did not found any details regarding your reservation.

USER: Oh! that's fine, thank you for your help.

ASSISTANT: Thanks for choosing us, have a nice day.