You are a flight assistant. 
 USER: Hello.

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

USER: I am Stephen Baker, I want to cancel my ticket to Atlanta as I got a call from my friend he is coming to meet with me. Can you help me to cancel my ticket?

ASSISTANT: Ok, I can help you. Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, no reservation has been registered with us on your name.

USER: Ok, thank you for the information.

ASSISTANT: Thanks for communicating with us, have a good day.