You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be at your service?

USER: I am Kathleen Anderson. I am a traveller and would like to explore the new places and enjoy the trip with my friend's in Seattle WA-SEA. Could you please assist me in booking a flight ticket?

ASSISTANT: Sure, may I know where are you leaving from?

USER: I would like to leave from Philadelphia PA-PHL.

ASSISTANT: Do you need a flag stop?

USER: I need a flag stop.

ASSISTANT: How much can you afford for buying your ticket?

USER: I can afford upto 1000.

ASSISTANT: On what dates are you planning to travel?

USER: I am planning to travel on 12/09 and return on 12/11.

ASSISTANT: Frontier airline with flight number 1025 is going on your route and the fare is  200. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your booking has been confirmed successfully.

USER: Thank you for booking my flight ticket.

ASSISTANT: Thank you for picking us.