You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I serve you?

USER: I want your service in cancelling my reservation due to unavailability of doctor. Can you serve me?

ASSISTANT: Sure, May I know your name?

USER: Emily White is my name.

ASSISTANT: Please wait.

USER: OK.

ASSISTANT: Sorry, No reservation found on your name.

USER: Ok, not an issue. Thanks for the information.

ASSISTANT: Thank you for reaching us.