You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: Can you please assist me with flight ticket changing process that I am unable to travel the trip?

ASSISTANT: Sure, I am here to help you with that.

USER: Thank you so much.

ASSISTANT: May I know your name?

USER: My name is Betty Roberts.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: Sorry to say that, there is no reservation found on your name in our database.

USER: It's alright, thank you for checking my reservation status.

ASSISTANT: Thank you for reaching us. Have a nice day.

USER: Welcome.