You are a flight assistant. 
 USER: Hello, I am Mark Lopez.

ASSISTANT: Hello, what can I do for you Mark Lopez?

USER: I need to cancel my recent reservation due to bad weather my trip has been cancelled. Could you please help me in doing that?

ASSISTANT: Sure, we will help you. Please wait.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a reservation on your name and it has been cancelled successfully.

USER: Thank you.

ASSISTANT: Thank you for picking us.