You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you at this moment?

USER: I have made a reservation earlier to attend for a seminar. Can you please aid me to change it?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: May I know your name to check the previous reservation status?

USER: Sure, my name is Larry Thompson.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no active reservation found on your name in the database.

USER: Ok, thanks for your response.

ASSISTANT: Thank you for opting us.