customer: Hello. 
 agent: Hello, what kind of service your looking for? 
 customer: Can you please help me with booking a flight ticket from DTW to SFO? 
 agent: Sure, please share me your travel dates. 
 customer: My travelling dates are from Sept 12-14. 
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 customer: I would be comfortable with single stop over. 
 agent: For booking, we need your good name. Please mention it. 
 customer: Justin Evans here. 
 agent: May I know your class preferences? 
 customer: I prefer business class. 
 agent: May I know your arrival and depart timings? 
 customer: I am comfortable with any time. 
 agent: We found a Frontier airline and 1001 is flight number with a fare of 700. Shall I proceed? 
 customer: You can proceed with booking. 
 agent: Your ticket is confirmed with a business class. 
 customer: Thank you for the help. 
 agent: Thank you for opting us.
agent: Do you need direct flight or connecting flight?