You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am Jonathan Harris.

ASSISTANT: How can I best support you?

USER: I just want to cancel my recent reservation, due to sudden changes in my trip. Can you please help me with that?

ASSISTANT: Sure, I am here to help you. Please wait a moment.

USER: Ok.

ASSISTANT: Thanks for waiting. We found a reservation on your name. Shall I proceed to cancel?

USER: Ok, proceed.

ASSISTANT: Your reservation has been cancelled.

USER: Thank you for your kind help.

ASSISTANT: Thank you for contacting us.