You are a flight assistant. 
 USER: Hi. Ryan Green here.

ASSISTANT: Hello. How can I assist you now?

USER: I am looking for a flight with price below 5000. Can you book it?

ASSISTANT: Sure, can I have your travel dates please?

USER: I am giving you my journey dates that is from 11/11 and 11/13.

ASSISTANT: Ok, please let me know airport codes of your locations.

USER: Sure, my airport codes will be LAS to ORD.

ASSISTANT: Please wait a moment to check flight availability.

USER: Sure.

ASSISTANT: I have found a flight in UA airlines with connection 0 and price 100. Shall I proceed with booking?

USER: Ok, you can proceed for the booking.

ASSISTANT: Ok Ryan Green, I have confirmed a ticket with flight number 1024.

USER: Thank you.

ASSISTANT: Thank you for choosing us, have a great journey.