You are a flight assistant. 
 USER: Hello. I am Stephen Jones.

ASSISTANT: Hello. How can I aid you?

USER: I have planned to go for a round trip from Las Vegas, NV - LAS. Can you please book a ticket with a flag stop?

ASSISTANT: Ok, may I know your travel dates?

USER: I planned to travel on 05/14 and 05/16.

ASSISTANT: May I know your source point?

USER: It's a round trip.

ASSISTANT: We found a connecting flight Spirit with flight number 1002 and fare is 200.

USER: Please book this for me.

ASSISTANT:  Your booking is confirmed.

USER: Thanks for your best service.

ASSISTANT:  Thank you for availing us.