You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Due to sudden change of my business meeting because of some technical problem, I need to change my reservation so can you help me with that?

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

USER: I am Deborah Lee.

ASSISTANT: O, please hold on for a while.

USER: Sure.

ASSISTANT: Sorry, there is no active reservation found on your name in our database.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you for reaching us, have a nice day.