You are a flight assistant. 
 USER: Hello, I am Carol Hernandez.

ASSISTANT: Hello, how may I assist you today?

USER: I am planning to attend conference meeting at Las Vegas, NV-LAS. So please help me in booking a flight ticket from Phoenix, AZ-PHX?

ASSISTANT: Sure, can you please mention your travel dates?

USER: My travelling dates are from 02/12 to 02/14.

ASSISTANT: Ok, do you have any price limit?

USER: My price limit is 200.

ASSISTANT: DOk, do you prefer direct flight or connected flight?

USER: I need a connecting flight.

ASSISTANT: We found a flight in AA airline with flight number 1009 and the price is 100. Can I proceed with it?

USER: Ok, you can proceed for booking.

ASSISTANT: Your ticket has been reserved.

USER: Thanks for your help.

ASSISTANT: Thank you for reaching us.