You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. What can I do for you now?

USER: Due to the sudden demise of my Granny, I am unable to catch a flight.

ASSISTANT: Ok.

USER: So I had a request to you to cancel my existing reservation?

ASSISTANT: Sure, I will cancel your reservation. For this I want to know your name.

USER: Sure, my name is Ronald Rodriguez.

ASSISTANT: Give a minute, I will get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting. You have no reservation found with  your name.

USER: Ok, no problem.

ASSISTANT: Thank you for approaching us.

USER: Thanks for your valuable information.

ASSISTANT: Have a pleasant day.