You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: My interview is cancelled, so I need to cancel my previous ticket. Can you help me?

ASSISTANT: Sure, I am glad to help you. Could you please provide your name to check your reservation status?

USER: My name is Christopher Gonzalez.

ASSISTANT: Sorry to say, no reservation found on your name.

USER: It's ok, no problem. Thank you for searching my reservation.

ASSISTANT: Thank you for choosing us, have a nice day.