You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I amend you?

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. May I know your name please?

USER: My name is Betty Miller.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Thank you for waiting, we are sorry to say that no reservation was found in our database on your name.

USER: Not an issue, thank you.

ASSISTANT: Thanks for your approach.