You are a flight assistant. 
 USER: Hello, I am David King.

ASSISTANT: Hello. How can I provide assistance to you?

USER: Due to heavy rains at my destination I want to cancel my reservation.

ASSISTANT: Ok.

USER: Can you please help me with cancellation?

ASSISTANT: Sure. Give a minute. I will get back to you. Unfortunately, there was no reservation found with your name.

USER: Ok, no issue. Thank you.

ASSISTANT: Thank you for your time with us.