You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Andrew Martin here.

ASSISTANT: How may I help you today?

USER: I was made a reservation to Chicago for a business meeting, earlier in this week.But suddenly the meeting got cancelled. So I want to cancel my reservation.Could you please help me for that?

ASSISTANT: Sure, I will help you with that.

USER: Ok.

ASSISTANT: Give me a minute, so that I will check your reservation in our database.

USER: Ok, take your time.

ASSISTANT: Yes Andrew, your reservation is found, and  I successfully cancelled your reservation.

USER: Thank you for helping me.

ASSISTANT: Thank you for contacting us. Have a nice day.

USER: Have a great day.