You are a flight assistant. 
 USER: HI.

ASSISTANT: Hello, how can I assist you today?

USER: Please help me to book a flight ticket from PHL to SFO.

ASSISTANT: Sure, may I know your planned travel dates?

USER: My journey dates are from Mar, 17 to Mar, 19.

ASSISTANT: May I know your connection limit?

USER: I need a single connecting flight.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: May I know your name please?

USER: Mark Miller.

ASSISTANT: We found a Frontier airline, flight number: 1007, price: 100 with one connection.

USER: Please proceed.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you for booking.

ASSISTANT: Thank you for choosing us.