You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to amend my reservation dates.Can you please help me in this?

ASSISTANT: Sure, please wait for a while. So, May I know your name?

USER: Myself Richard Davis.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us.