You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER:  I am Donna Evans. I want to travel to NV-LAS to attend my sister wedding. Can you book a connecting flight?

ASSISTANT: Sure, can you please help me with your journey dates?

USER: My travel dates are 04/13 and 04/15.

ASSISTANT: May I know your origin airport code please?

USER:  I will depart from TX-IAH.

ASSISTANT: Do you have any specifications?

USER: Make sure price should not exceed 500.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: We found a flight with Hawaiian airlines, flight number is 1001 with one connection and price is 200.

USER: You can proceed.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you for booking.

ASSISTANT: Thanks for choosing us.