You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Jack Miller,I want to change my reservation so I can get a new flight with low price. Can you help me with that?

ASSISTANT: Sure. Wait a minute.

USER: Sure.

ASSISTANT: Thanks for waiting, There is no flights found with your name.

USER: Ok, thanks for the information.

ASSISTANT: Thank you.