You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Patrick Taylor here. I want to cancel my ticket as my leave has been cancelled.

ASSISTANT: Sure, please wait a moment I will check your details and proceed further.

USER: Sure.

ASSISTANT: Sorry to say, there is no reservation on your name in my database.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us, have a nice day.