You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: Due to an emergency meeting scheduled I need to cancel my reservation. Can you help me to cancel my reservation?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: On which name you have reserved your ticket?

USER: Shirley Johnson is my name.

ASSISTANT: Ok, please wait a moment I will check and get back to you.

USER: OK.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Ok, no problem.

ASSISTANT: Thank you for opting us.

USER: Thanks for the quick response.