You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Kevin Lewis.

ASSISTANT: Lewis, how may I assist you?

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

ASSISTANT: Sure, I am happy to help you. Please wait, let me check your reservation status in our database.

USER: Sure, I will wait for your response.

ASSISTANT: Lewis, I have not found any reservation under your name in our database.

USER: Not a big problem, anyhow than you very much for your service.

ASSISTANT: You are welcome and thank you for choosing us.