You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: My name is Amy Adams, can you please help me in changing my existing reservation details?

ASSISTANT: Sure, please wait. I will get back to you.

USER: Ok.

ASSISTANT: No reservation found under your name in our database.

USER: That's ok, thank you for the information.

ASSISTANT: You are welcome, have a good day.