You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How may I support you now?

USER: I got an appointment to meet obligates of United states but suddenly they went to another location on the same dates, can you please help me in flight ticket modification process?

ASSISTANT: Sure, I can help you in that.

USER: Ok.

ASSISTANT: For that I need to know your name. Can you please provide me?

USER: Sure, my name is Eric Garcia.

ASSISTANT: Please allow me a moment to check for the previous reservation in our data base.

USER: Sure.

ASSISTANT: We are sorry to say that, there is no active reservation found on your name.

USER: Ok, thank you.

ASSISTANT: Thanks for choosing us.