customer: Hello. 
 agent: Hello. How can I help you? 
 customer: Can you help me to book a flight ticket from PHL to IAD? 
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 customer: My travel dates are Oct 03 and Oct 05. 
 agent: Can I know your name? 
 customer: My name is Sarah Taylor. 
 agent: Do you have any preference? 
 customer: I prefer connecting flight on this route. 
 agent: Found ticket with airline Southwest for price 100 having flight number 1000. 
 customer: Please proceed to book my flight ticket in this airlines. 
 agent: Ticket is booked. 
 customer: Thank you. 
 agent: Thank you.
agent: Sure. Let me know your travelling dates.