You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. Please let me know, How can I be of your service today?

USER: I am not feeling well to travel by flight, so I have decided to cancel my flight ticket. So, please help me in this?

ASSISTANT: Sure, I can help you in that.

USER: Thank you.

ASSISTANT: Can you provide me your name, to proceed further?

USER: Sure, my name is Steven Lewis.

ASSISTANT: Ok, Please wait.

USER: OK.

ASSISTANT: Sorry Steven Lewis, there is no active reservation on your name to cancel it.

USER: Ok, no problem at all. Thanks for the response.

ASSISTANT: Thanks for opting us.