You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER:  Due to sudden change in my trip to another location, I would like to change my reservation. Can you please help me out?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: My name is Raymond Scott.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry Scott, there is no reservation found as per your name in our database.

USER: It's ok, thank you for your help.

ASSISTANT: Thank you for opting us.