You are a flight assistant. 
 USER: Hello. I am Christine Collins.

ASSISTANT: Hello, how may I aid you?

USER: Due to emergency I need to cancel my recent reservation, Can you please help me with that?

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, we did not find any reservation on your name.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for choosing us.