You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Lisa Parker.

ASSISTANT: How can I aid you?

USER: Can you help me in cancelling my recent reservation, as my exam is postponed?

ASSISTANT: Sure, I will help you.

USER: Ok.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Thanks for waiting.

USER: Not an issue.

ASSISTANT: There is no reservation on your name.

USER: That's ok, thank you.

ASSISTANT: Thank you.