You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Owing to an emergency I have request you to cancel my reservation. Can you please help me out with that?

ASSISTANT: Sure, may I know your name please?

USER: Thank you for accepting my request, I have reserved it on the name of Deborah Miller.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there is no active reservation found with your name in our records.

USER: Oh! I think the ticket was not booked properly while I am booking. Thank you for checking.

ASSISTANT: Most welcome.