You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: Due to an emergency meeting, I just want to change my existing reservation. Can you please assist me to change it?

ASSISTANT: Sure, I am here to help you. Can you please provide your name to check your reservation status?

USER: Sure, please check my reservation on the name of Michael Baker.

ASSISTANT: Wait a moment please.

USER: Sure.

ASSISTANT: Michael Baker, there is no active reservation found under your name in our database.

USER: That's Ok, thanks for your response.

ASSISTANT: Thank you for utilizing our service.