You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Charles Mitchell. Can you please book a flight ticket from EWR to HOU?

ASSISTANT: Sure, can you please mention with your dates of journey?

USER: I will start on Mar 29 and return on Mar 31.

ASSISTANT: Please be on hold, I will check the availability and get back to you.

USER: Sure.

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

USER: Please confirm the booking.

ASSISTANT: Ok, your booking is done with the flight number 1004.

USER: Thank you for the booking.

ASSISTANT: You are welcome, have a safe flight.