You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: David Davis here.

ASSISTANT: Welcome to flight booking agency Davis.

USER: I was made a wrong reservation by mistakenly, earlier in this week. Can you please help me to cancel my reservation?

ASSISTANT: Sure, I will help you.

USER: Thank you for that.

ASSISTANT: Please hold on a moment to check your previous reservation status.

USER: Ok, I can wait.

ASSISTANT: Sorry to inform you that, there is no reservation exists under your name in our records.

USER: Anyway, thank you for the information.

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