You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

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

ASSISTANT: Yes, can you share me your travelling dates?

USER: My travelling dates are on Dec 18 and Dec 20.

ASSISTANT: Do you have any other specifications?

USER: I need a economy class.

ASSISTANT: Do you have any preferences?

USER: I prefer connecting flight.

ASSISTANT: Give me a moment. I have found a flight ticket with 1 connecting flight.

USER: Ok, you can proceed.

ASSISTANT: Can I know your name for booking?

USER: My name is Barbara Scott.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for contacting us.