You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I want to cancel my reservation due to some problems I am unable to travel those dates, can you please cancel my reservation?

ASSISTANT: Sure, I will help you with that. Can you please provide your name to check your previous reservation?

USER: Thanks, my name is Samuel Turner.

ASSISTANT: Ok, please be on hold to check.

USER: Sure.

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

USER: Oh! It's ok no problem. Thank you for your service.

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