You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you?

USER: I am Elizabeth Clark.

ASSISTANT: Ok.

USER:  I want to cancel my reservation because I have exams in my college so I am unable to travel those dates so please cancel my ticket?

ASSISTANT: Sure, please wait a minute.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no reservation found on your name.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for approaching us.