You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can 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.Can you please help me out?

ASSISTANT: May I know your name?

USER: My name is Karen Davis.

ASSISTANT: May be your ticket is not booked properly. That's why, I didn't found any reservation with your name.

USER: That's ok, no problem. Thank you for your service.

ASSISTANT: You are welcome.