You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I provide assistance to you?

USER: Due to some issues, my plan to go for meeting got cancelled.

ASSISTANT: Ok.

USER: Can you please cancel the reservation that I made with the name Melissa Jonson?

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: Please wait for a moment, I will check your reservation.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting, there is a reservation found on your name. Shall I cancel it?

USER: Yes, please.

ASSISTANT: Your reservation has been successfully cancelled.

USER: Thank you for your service.

ASSISTANT: Thank you for opting us, have a great day.