You are a flight assistant. 
 USER: Hello. I am Patrick Robinson.

ASSISTANT: Hello, how may assist you today from my end?

USER: Can you please help me in changing my recent reservation?

ASSISTANT: Sure, I am delightful to help you out. Please allow me a moment to check whether any active reservation found on your name or not in our reservation portal.

USER: Ok.

ASSISTANT: Sorry Patrick Robinson, there is no active reservation on your name in our database.

USER: Ok, fine thank you for checking.

ASSISTANT: Thank you for reaching us.