You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Could you please help me in booking a flight ticket from PHL to SEA?

ASSISTANT: Sure, may I know your trip dates?

USER: My trip dates are Sept 20 and Sept 22.

ASSISTANT: Do you need a connecting flight?

USER: Yes, I need a connecting flight.

ASSISTANT: May I know your name?

USER: My name is Rebecca Williams.

ASSISTANT: Can I know your other preferences?

USER: I don't have any other preferences.

ASSISTANT: There is a flight of Spirit airline, flight number 1011 with the fare of 100.

USER: Ok, proceed with the booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for choosing us.