You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I would like to change my existing reservation due to postpone of my seminar. Could you please help me?

ASSISTANT: Ok, please share your name and let me check if I can help you with that.

USER: I am Patrick Turner.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: We didn't find any reservation on your name in our system.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for connecting us.