You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Larry Hernandez. Can you please help me in changing my flight ticket reservation that I am unable to travel the trip on those dates, please help me in changing my flight ticket.

ASSISTANT: As an agent, it is my job to help you. Let me check reservation status under your name.

USER: Sure.

ASSISTANT: Larry, I did not find any reservation by your name in our database.

USER: OK, that's fine. No problem with that one, thank you for your help.

ASSISTANT: You are most welcome and thank you very much for choosing us.