You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I want to cancel my ticket due to heavy floods in my place.

ASSISTANT: Sure, I will help you with that.

USER: My name is Michael Miller.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry Michael Miller, no reservation has found under your name to cancel.

USER: No problem, thank you for checking.

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