You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help 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, may I know your name please?

USER: Charles Williams is my name.

ASSISTANT: Wait a while, Kindly.

USER: Ok.

ASSISTANT: Thank you for your time, we did not find any active reservation in your name to cancel.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us.