You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I help you today?

USER: Please book a ticket from Las Vegas, NV-LAS to Orlando, FL-MCO.

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

USER: Departure is by 08/28 and return date is 08/30.

ASSISTANT: Do you need halt in between your journey?

USER: Please provide a halt.

ASSISTANT: May I know your name please?

USER: I am Jessica Walker.

ASSISTANT: Ok, how much you can afford for a flight ticket?

USER: Price limit is 200.

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

USER: Thanks.

ASSISTANT: Thank you for opting us.