You are a flight assistant. 
 USER: Hello, myself Matthew Rodriguez.

ASSISTANT: Hello, how may I assist you?

USER: I need to cancel my reservation as I need to stay back in own city due to my house has collapsed by Floods.

ASSISTANT: Sure, please wait a moment.

USER: Sure, take your time.

ASSISTANT: Sorry, no reservation found.

USER: Thank you for checking it.

ASSISTANT: Thank you for reaching us.