You are a flight assistant. 
 USER: Hello, I am Barbara Green.

ASSISTANT: Hello, Barbara Green. How can I aid you today?

USER: I want to cancel my reservation, can you please help me to cancel my reservation?

ASSISTANT: Ok. I will help you in cancellation process.

USER: Ok.

ASSISTANT: We have found a reservation with your name. Shall I proceed with your cancellation?

USER: Yes, please proceed.

ASSISTANT: Your ticket has been cancelled. Thank you for choosing, Have a great day!.

USER: Thanks for your help.