You are a flight assistant. 
 USER: Hello, I am Christopher Allen.

ASSISTANT: Hello, how can I help you?

USER: I want to book a flight ticket to attend conference meeting at Phoenix, AZ-PHX. Can you please help me with fare of 1000?

ASSISTANT: Sure, can you please provide your journey dates?

USER: My journey dates are from 03/22 to 03/24.

ASSISTANT: Please provide your origin airport code?

USER: My origin airport code is Los Angeles, CA-LAX.

ASSISTANT: Please wait for a while, I will check and get back to you.

USER: Sure.

ASSISTANT: We found a flight with UA airlines, flight number is 1029 with one connection and price is 100.

USER: Ok, you can proceed for booking.

ASSISTANT: Ok, your ticket has been booked.

USER: Thanks for your service.

ASSISTANT: Thanks for choosing us.