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

ASSISTANT: Hello, how may I provide service to you?

USER: I just want to cancel my reservation due to health problem. So, help me in this?

ASSISTANT: Sure, we will help you. Please wait for a moment.

USER: OK.

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

USER: Ok, please cancel it.

ASSISTANT: Your reservation has been cancelled.

USER: Thanks a lot.

ASSISTANT: Thank you for reaching us.