You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you for the day?

USER: I would like to change my reservation which is under my name. Can you please help me with that?

ASSISTANT: Sure, I am here to help you with that. May I know your name please?

USER: Sure, my name is Jacob Roberts.

ASSISTANT: Please hold for a while, let me check your previous reservation status.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting, there is no active reservation found with your name in our database to change it.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for reaching us. Have a nice day.

USER: You are welcome.