You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello. How may I aid you today?

USER: I am Charles Lopez. I have planned to visit Dallas due to heavy snowfall, I want to cancel my recent reservation. Can you help me out in cancellation of my ticket?

ASSISTANT: Sure, please wait a moment I will check the reservation status.

USER: Sure.

ASSISTANT: Thanks for waiting, we did not found any reservation by this name.

USER: Not a problem, Thank you for the information.

ASSISTANT: Thanks for choosing us.