You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you?

USER: I am Dennis Roberts, can you help me to book a flight within 500 price limit?

ASSISTANT: Sure, may I know your airport codes?

USER: My airport codes are PHX and IAH.

ASSISTANT: Can you please tell me your trip dates?

USER: My travelling dates are 01/01 and 01/03.

ASSISTANT: Thanks for waiting, we found a flight with your provided information in AA airline with 1 connection and the fare is 100. Shall I confirm your ticket with this airline?

USER: Proceed with booking.

ASSISTANT: Your ticket is booked in 1026 flight.

USER: Thank you for your help.

ASSISTANT: Most welcome.