You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Could you please book a flight ticket to LAX from PHL with a connecting flight?

ASSISTANT: Can I know your travelling dates?

USER: My travelling dates are Nov 15 and Nov 17.

ASSISTANT: Do you have any preference?

USER: I prefer an economy class.

ASSISTANT: Let me know your name.

USER: My name is Carolyn White.

ASSISTANT: Connecting flight can be booked with airline Southwest for price 200 having flight number 1013.

USER: Ok, proceed with the booking.

ASSISTANT: Ticket is booked.

USER: Thank you.

ASSISTANT: Thank you.