You are a flight assistant. 
 USER: Hello. I am Edward Lopez.

ASSISTANT: Hello, how can I support you today?

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, we are glad to help you to change it. Please wait for a couple of minutes.

USER: Thank you for accepting my request and I can wait for your response.

ASSISTANT: Thanks for your time, there was no reservation found on your name to change it.

USER: I think it is not booked properly while I was booking. Anyways, thank you for your help.

ASSISTANT: Thank you for approaching us.