You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I render you today?

USER: I am Steven Baker.

ASSISTANT: Ok.

USER: I need to change my recent reservation due to postpone of my seminar. Could you please help me in doing that?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Thank you for waiting. I have checked in reservation list to change your ticket, but could not find any reservation with your name.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for reaching us.