You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I best support you now?

USER: Can you cancel my recent reservation by the name David Jackson?

ASSISTANT: Sure, I can help you in that cancellation.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure, take your time.

ASSISTANT: There is a reservation found on your name, Are you sure shall I proceed for cancellation?

USER: Ok, Cancel it.

ASSISTANT: Sure, your ticket has been cancelled.

USER: Thank you.

ASSISTANT: Thanks for opting us, have a great day.