You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I would like to change my existing reservation, which is done recently. Can you please help me out?

ASSISTANT: Sure, I will help you. Please help me with your name.

USER: Thank you for considering my request. Myself Richard Scott.

ASSISTANT: Please allow me a minute.

USER: Sure, I will wait for your response.

ASSISTANT: Richard Scott, I am really sorry to inform you that there are is no reservation on your name.

USER: Not an issue with this one, anyway thank you for the information.

ASSISTANT: Thank you for reaching us. Have a great time.

USER: Thank you for your service.