You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, what can I do for you?

USER: Due to having an emergency meeting with my friend, I want to cancel my recent reservation. Will you be my helping hand in that?

ASSISTANT: Sure, may I please know your name?

USER: I am Nicole Miller.

ASSISTANT: Nicole, I am sorry to inform you that I have not found any existing reservation on your name.

USER: Ok.

ASSISTANT: Thanks for opting us. Hope to serve you better next time.

USER: Thank you for your service.