You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Jeffery Carter.

ASSISTANT: How can I assist you at this moment?

USER: I want to cancel my recent ticket booking due to office work that my manager did not approve my leaves, so can you please cancel it?

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: Sorry Jeffery Carter, no reservation found on your name in our reservation list.

USER: That's Fine.

ASSISTANT: Thank you for opting us, have a nice day.

USER: Thanks for the information.