You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I would like to amend my reservation, can you help me in that?

ASSISTANT: Sure, I am here to help you out.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: Myself Jason Collins.

ASSISTANT: Wait a moment please.

USER: Sure, I will wait for your response.

ASSISTANT: Jason Collins, we regret to inform you that there is no reservation found on your name in our records.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for choosing us.