You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What service that you are seeking from our agency?

USER: Kenneth Hall here.

ASSISTANT: Welcome to flight booking agency Hall.

USER: Due to inconvenience of work my work, I want to cancel my reservation. Can you please help me for that?

ASSISTANT: Sure, I am glad to help you.

USER: Ok.

ASSISTANT: Please wait a moment to check your previous reservation.

USER: Ok, I will wait.

ASSISTANT: We regret that, there is no reservation found with your name in our records.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for approaching us, have a great day.