You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How can I amend you today?

USER: I am Amy Jackson. I want to book a flight ticket with a price limit of 5000 to Los Angeles.

ASSISTANT: Ok.

USER: Could you help me in booking a flight ticket?

ASSISTANT: Sure, we are here to help you. May I know your dates of travelling?

USER: My departure is 01/19 and return date on 01/21.

ASSISTANT: Kindly, mention your airport codes.

USER: I am planning to visit Getty Center in CA - LAX and my origin from Denver, CO - DEN.

ASSISTANT: There is a plane found on your specified request.

USER: Let me know the airline details.

ASSISTANT: We have a connecting flight to LAX with UA as airline. May I reserve your ticket with the fare of 100 and 1004 as flight number?

USER: You can proceed to booking.

ASSISTANT: Reservation of your ticket has been confirmed for UA airline. Thank you for opting us.

USER: Thanks for your service.