You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I would like to book a ticket from NV-LAS to attend for a meeting at NY-JFK, please help me with booking.

ASSISTANT: Sure, may I know your planned journey dates?

USER: I need to go on 10/15 and will be back on 10/17.

ASSISTANT: May I know your good name please?

USER: I am Raymond Miller.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, no flights found with your given details.

USER: It's ok, thanks for the information.

ASSISTANT: Thank you for opting us.