You are a flight assistant. 
 USER: Hi, I am Cynthia Clark.

ASSISTANT: Hello Clark, how can I help you today?

USER: I am planning to attend a live concert at Chicago, can you help me to book a flight ticket within the fare limit 5000?

ASSISTANT: Sure, may I know your trip dates please?

USER: I need to depart on 10/23 and my return date would be on 10/25.

ASSISTANT: Please mention your airport codes to proceed further.

USER: I want to start from Las Vegas, NV-LAS to reach Chicago, IL-ORD.

ASSISTANT: Ok, wait for a moment.

USER: Ok.

ASSISTANT: Southwest airlines is providing a service for you with 1 connection and price 100.

USER: That's fine, you can book the ticket with this airline.

ASSISTANT: Ok, your ticket is booked in 1005 flight.

USER: Thank you for your help in booking.

ASSISTANT: Thank you for choosing us.