You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am Helen Roberts.

ASSISTANT: Helen Roberts, by what way may I aid you now?

USER: I have planned to meet my best friend at Las Vegas, please book me a flight ticket within price 200.

ASSISTANT: Sure. I need to know your travelling dates for further process in booking.

USER: My preferred travelling dates are depart date on 01/30 and return date on 02/01.

ASSISTANT: Is there any halt in your journey?

USER: I need a stopover in between my journey.

ASSISTANT: Ok. Please help me with your airport codes.

USER: My origin point is CA- OAK and Dest point is NV- LAS.

ASSISTANT: Give a minute, I will check the availability of flights.

USER: Ok.

ASSISTANT: Thanks for sharing your details with patience. We are happy to inform you that there was a flight with 1 connection of price 100 in 1021 flight. Shall I make a reservation with UA airline?

USER: Please go with booking.

ASSISTANT: Your ticket has been reserved with your name.

USER: Thank you.

ASSISTANT: Thank you for opting us.