You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am planning to go for a trip to Philadelphia. Can you book a connecting flight from SEA to PHL?

ASSISTANT: Sure, may I know your travel dates?

USER: I would like to take off on Sept, 19 and return back on Sept, 21.

ASSISTANT: Do you like economy or business class?

USER: I need economy class ticket.

ASSISTANT: Please share me your name.

USER: Daniel Jones here.

ASSISTANT: We found a economy flight on your details with Spirit Airlines, flight number: 1013. Shall I book this ticket?

USER: Please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you.