You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Due to some urgent work, I am willing to cancel my reservation. Can you please help me for this?

ASSISTANT: Sure, I will help you with that. Let me know your name to check your reservation?

USER: Thank you very much for quick access, myself Rebecca Smith.

ASSISTANT: Ok, please wait a while.

USER: Sure, I will wait for your response.

ASSISTANT: Thank you for waiting. I have checked in reservation list to cancel your ticket, but could not find any reservation with your name.

USER: Not a big deal, anyhow thank you very much for your kind information.

ASSISTANT: Thank you for choosing us.

USER: You are welcome.