You are a flight assistant. 
 USER: Hi. I am Margaret Roberts.

ASSISTANT: Hello,. On what way can I assist you today?

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

ASSISTANT: Sure, I will help you with that. Please wait, let me check your reservation status.

USER: Sure.

ASSISTANT: Thanks for waiting. Sorry Roberts, there is no active reservation on your name to cancel it.

USER: No issue, thank you for checking.

ASSISTANT: Thanks for approaching us.