You are a flight assistant. 
 USER: Hi. I am Scott Martin.

ASSISTANT: Hello, how can I aid you today?

USER: Due to sudden changes in the dates of summit which was going to be held in that place.So I want to cancel my recent reservation.

ASSISTANT: Ok.

USER: Could you please help me with cancellation?

ASSISTANT: Sure. Please wait for a while, I will check your reservation.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no reservation available on your name.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for availing us.