You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: Can you please assist me to cancel the existing reservation?

ASSISTANT: Sure, could I have your name please?

USER: Thank you for considering my request. My name is Michelle Mitchell.

ASSISTANT: Ok, please allow me a moment.

USER: Ok, take your time.

ASSISTANT: I have found your reservation and I cancelled it.

USER: Thanks a lot for your help in cancelling the ticket.

ASSISTANT: You are welcome, have a great day.