You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Ryan Williams here. Can you please help me in booking the ticket from Dallas to Seattle?

ASSISTANT: Sure, I am here to help you with ticket booking. Can you please let me know your travel dates?

USER: Sure, my travel dates are 01/07 and 01/09.

ASSISTANT: Ok, which airfield codes will you prefer to travel?

USER: Yes, my boarding airport code is DFW and destination airport code is SEA.

ASSISTANT: Ok, please hold on for a minute to search the available flight.

USER: Sure, I'll wait.

ASSISTANT: I found a flight with connection limit 1 and the flight airlines is UA with the price limit 200. Would you like me to proceed with booking?

USER: Yes, you can proceed for booking.

ASSISTANT: Ok, your ticket reservation is done successfully with the flight number 1004.

USER: Thank you so much.

ASSISTANT: You are most welcome. Have a safe flight.