You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I give assistance to you?

USER: I have to cancel my previous flight ticket booking that the trip got cancelled, can you please help me in cancellation process?

ASSISTANT: Surely, I will help you out. May I know your name please?

USER: Thank you and my name is Jason Davis.

ASSISTANT: Ok, please wait for a few minutes.

USER: Sure, I can wait for your reply.

ASSISTANT: Thanks for your waiting, we searched in our database with your name to cancel that reservation but I could not find any reservation.

USER: No problem with that one. Thank you for your information.

ASSISTANT: Thank you for contacting us.

USER: Welcome.