You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Myself Steven Hill. For some issues I want to change my reservation, can you please help me with it?

ASSISTANT: Sure Steven. Please wait, I will get back to you.

USER: Sure.

ASSISTANT: Sorry Steven, I did not find any reservation under your name.

USER: It's ok. Thank you for the information.

ASSISTANT: Thank you, have a great day.