You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I aid you?

USER: I want to cancel my ticket as I am sick.

ASSISTANT: Sure, May I know your name?

USER: Mark Taylor here.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

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

USER: No problem, thank you.

ASSISTANT: Thank you.