You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How should I assist you today?

USER: Due to some technical issue in our office, I want to solve the issue. Regarding that, Can you cancel my booking?

ASSISTANT: Sure, I will help you with that. May I know your good name for cancelling the ticket?

USER: Donald Green here.

ASSISTANT: Ok, please give me a moment.

USER: Sure.

ASSISTANT: Ok Donald, your reservation  has found and successfully cancelled.

USER: Ok, thank you for your help in cancelling my booking.

ASSISTANT: Thank you for reaching us. Have a good day.

USER: Thank you.