customer: Hi,. 
 agent: Hello,. How can I help you? 
 customer: I would like to attend Women's Fashion Week in Philadelphia, PA - PHL. Can you please help me in booking a flight ticket within the fare of 500? 
 agent: May I know your travelling dates. 
 customer: My depart date is on 03/19 and arrive date is on 03/21. 
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 customer: I wish to start from Houston, TX - HOU. 
 agent: Please mention your name. 
 customer: My name is Samuel King. 
 agent: Connecting flight can be booked with airline Spirit for price 100. Shall I book a ticket? 
 customer: Please confirm my flight booking. 
 agent: Your ticket is booked with flight number 1004. 
 customer: Thanks for assisting me. 
 agent: Thanks.
agent: Ok. Please specify your origin airport code.