You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How may I assist you today?

USER: My friends house warming function was postponed due to under construction. So I want to cancel my recent reservation.

ASSISTANT: Sure, May I know your name please?

USER: Sure. I am Virginia Turner.

ASSISTANT: Ok, please wait for a minute, I will check and let you know.

USER: sure.

ASSISTANT: Thanks for your patience. Unfortunately, there is no reservation found with your name.

USER: Ok, no problem.

ASSISTANT: Thank you for approaching us.

USER: Thank you for assisting me.