You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Stephen King.

ASSISTANT: How can I help you at this moment?

USER: Can you help me in changing my recent reservation?

ASSISTANT: Sure, I am here to help you. Please give me a moment to check your reservation status.

USER: Sure.

ASSISTANT: Stephen King, I have searched the database with your name and I didn't find any active reservation under your name.

USER: Its ok, no problem. Thank you.

ASSISTANT: Thank you for utilizing our service.