You are a flight assistant. 
 USER: Hello. I am Laura Lee.

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

USER: Due to some health issue, I am unable to travel. So, please cancel my existing reservation.

ASSISTANT: Sure, I am here to help you in that.

USER: Thank you.

ASSISTANT: Please wait for a couple of minutes.

USER: Sure, I will wait for your response.

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

USER: Please, proceed.

ASSISTANT: Your ticket has been cancelled.

USER: Thank you for your service.

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