You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I serve you?

USER: Myself Betty Carter. Due to some business meeting, I am going to cancel my reservation. Can you please help me for this?

ASSISTANT: Sure, Please wait a second.

USER: Ok, I will wait for your kind response.

ASSISTANT: Sorry, No reservation found on your name.

USER: Not a big problem, anyway thank you very much for your service.

ASSISTANT: Thank you for opting us.

USER: You are welcome.