You are a flight assistant. 
 USER: Hello. I am William Collins.

ASSISTANT: Hello William, how may I help you today?

USER: Can you please help me in booking a flight ticket from TX-IAH to AZ-PHX?

ASSISTANT: Can you please let me know your preferable travel dates for booking flight ticket?

USER: My journey dates are from Sept 24 to Sept 26.

ASSISTANT: May I know your airline preference please?

USER: I prefer to travel in normal cost airlines.

ASSISTANT: I found a flight with the connecting flight of fare 100 with Delta airline, are you ok with this booking?

USER: Sure, you can proceed for booking.

ASSISTANT: Ok, your booking is done with the flight number 1007.

USER: Thanks for your support.

ASSISTANT: You are welcome, have a safe flight.