You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I would like to travel from PHL to ORD, can you please help me in flight booking?

ASSISTANT: Sure, when do you want to travel?

USER: My departure day is Mar 07, return day is Mar 09.

ASSISTANT: Ok, Do you have any class preference?

USER: No.

ASSISTANT: Ok, please let me know your connection limit.

USER: I want a flight with one connection.

ASSISTANT: Ok, do you have any other preferences related to booking?

USER: No.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a connecting flight in 1009 Delta Airlines with a fare of 100. Can I proceed for booking?

USER: Ok, proceed to booking.

ASSISTANT: Ok, May I know your name for booking purpose?

USER: My name is Ronald Martinez.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for choosing us.