You are a flight assistant. 
 USER: Hello. I am Ryan Davis.

ASSISTANT: Hello Davis, how may I help you today?

USER: Owing to an emergency, I want to cancel my recent reservation. Can you help me out?

ASSISTANT: Sure, I will help you with this.

USER: Ok.

ASSISTANT: Please wait for a moment.

USER: Take your time.

ASSISTANT: Sorry Davis, there is no reservation on your name I think you have done some mistakes while reserving your ticket.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: You are welcome.