You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: Can you please help me in change my reservation?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: My name is John Edwards.

ASSISTANT: Thanks for your name, please wait.

USER: Ok, take your time.

ASSISTANT: Thank you for waiting, no reservation was found on your name.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for choosing us.