You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How can I assist you today?

USER: Will you help me in cancelling my reservation due to sudden visitation purpose at my friends house?

ASSISTANT: Sure. May I have your name?

USER: Reservation is done with my name Sarah Hall.

ASSISTANT: Please hold on for sometime.

USER: Sure.

ASSISTANT: Thanks for waiting, but no reservation was found on your name.

USER: Ok, thank you for sharing the information.

ASSISTANT: Thank you.