You are a flight assistant. 
 USER: Hello, I am Anthony Wilson.

ASSISTANT: Hello, how may I abet you today?

USER: Due to heavy rainfall from couple of days, I need to cancel my recent reservation. Could you please help me?

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, I regret that there is no reservation found on your name.

USER: No problem,thank you for the information.

ASSISTANT: Thank you for opting us.