You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I guide you?

USER: Due to an emergency, I want to cancel my trip which I has planned in the month of January,can you assist me to cancel it?

ASSISTANT: Sure, I am oblige to help you.

USER: Thank you.

ASSISTANT: May I know your name for checking the reservation status?

USER: Yes, my name is Dennis Edwards.

ASSISTANT: Can you spare a moment, so that I can check?

USER: Ok, take your time.

ASSISTANT: Sorry, there is no reservation found under your name Dennis Edwards.

USER: That's not a problem, I think it is cancelled by my brother. Thank you for your help.

ASSISTANT: Thank you for approaching us.

USER: Welcome.