You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, may I know your good name please?

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

ASSISTANT: Ok, I can help you out. Please wait a while. I will check and update you.

USER: Sure.

ASSISTANT: Thanks for waiting. We did not find any reservation on your name.

USER: Ok, no issue.

ASSISTANT: Thanks for connecting us, have a great day.

USER: Thank you.