You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What help can I do for you?

USER: I am trying to cancel my recent ticket but due to server problem it is not cancelling. Can you please help me?

ASSISTANT: Yes, I can help you, can you please share your name?

USER: My name is Mark Robinson.

ASSISTANT: Wait for a while.

USER: Ok, take your time.

ASSISTANT: I could not find any previous ticket booking under the name which you have given for us to check.

USER: It's ok, no problem. Anyway's thank you for spending your time.

ASSISTANT: You are most welcome and keep contacting us in future if there is any help needed.