You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Deborah Miller.

ASSISTANT: OK Miller, how may I guide you?

USER: I had a reservation for this month, but due to emergency in my office I could not travel in this month. Can you help in cancelling my reservation?

ASSISTANT: Sure Miller, I can help you in that one. Could you please hold on for a moment to check it?

USER: Sure.

ASSISTANT: Thank you for waiting. Sorry Miller, there is no ticket found as per your requested name.

USER: It's fine. Thank you for your help.

ASSISTANT: OK, thank you for reaching us. Have a great day Miller.

USER: Welcome.