You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how could I best help you today?

USER: I am Justin Jackson, I want to change my reservation as my meeting with share holders is postponed. can you help me to change my reservation?

ASSISTANT: Sure, we will guide you. Please wait for a moment, I will check the status and notify you.

USER: Sure.

ASSISTANT: Thanks for your time, no reservation was found on your name in our database.

USER: Thank you for the information.

ASSISTANT: Thank you for opting us.