You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I want to cancel my recent reservation, due to my brother's marriage has been cancelled.

ASSISTANT: Ok.

USER: Can you help me with cancellation?

ASSISTANT: Sure, I will help you. May I know your good name?

USER: Sure, my name is Samuel Roberts.

ASSISTANT: Please, wait for a minute.

USER: Sure.

ASSISTANT: Thanks for your time. There is no reservation found on your name.

USER: No problem, thanks for your help.

ASSISTANT: Thank you for approaching us.