You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you?

USER: I would like to cancel my reservation due to my house is collapsed in floods.

ASSISTANT: Please share your name.

USER: My name is Mark Clark.

ASSISTANT: No reservation was found on your name, Mark Clark.

USER: That's ok, no issue.

ASSISTANT: Thanks for reaching us.

USER: Thank you for helping me.