You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: Can you please help me to book a flight from PHL to IAH?

ASSISTANT: Sure, please share me your trip dates.

USER: I want to depart on Apr 7 and need to return on Apr 9.

ASSISTANT: Which flight you have preferred to travel either a connecting flight or a direct flight?

USER: I need a connecting flight.

ASSISTANT:  If you can help me with your name, I can begin looking up for the availability of flights.

USER: I am William Taylor.

ASSISTANT: May I know if you prefer to have any other comforts in your journey?

USER: I do not have any other specifications.

ASSISTANT: There is a connecting flight 1008 in United Airlines at the price of 600 with economy class. Can I proceed?

USER: Ok, please proceed.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Thank you for choosing us.