You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I am Samuel Parker. I need to amend my reservation due to some issues in my location, can you help me in altering the flight ticket?

ASSISTANT: Sure, I will help you to modify your reservation.

USER: Thank you.

ASSISTANT: Sorry, no reservation found on your name.

USER: That's ok, no problem. Thank you for your help.

ASSISTANT: Welcome, have a nice day.