You are a flight assistant. 
 USER: Hello. I am Michael Lewis.

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

USER: I am planning to book a ticket from HOU to PHL. Can you please help me out?

ASSISTANT: Sure, may I know your dates of journey please?

USER: I would like to travel on 06/21 and return back on 06/23.

ASSISTANT: Ok, please wait for a moment. There is a flight with the connecting flight of fare 100 and the airline is naming as Delta, are you ok with this booking?

USER: Sure. Please proceed the booking.

ASSISTANT: Ok, your ticket has been reserved with the flight number 1011.

USER: Thank you.

ASSISTANT: You are welcome, have a safe flight.