You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I support you today?

USER: Owing to an emergency, I have to cancel my reservation. Can you help me in doing that?

ASSISTANT: Sure, we are gleeful to help you for cancellation. To proceed further can I know your good name please?

USER: I am Rachel Hall.

ASSISTANT: Thanks for your name. Please wait a while.

USER: Ok.

ASSISTANT: Thank you for waiting. I have checked in reservation list to cancel your ticket, but could not find any reservation with your name.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for opting us, Have a great day.