customer: Hi. 
 agent: Hello, how may I aid you today? 
 customer: Catherine Anderson here. I would like to prefer a economy class for my business trip to New York. So can you book the flight ticket for me? 
 agent: Sure, please share me your source and destination airport codes. 
 customer: The airport codes are from HOU to EWR. 
 agent: May I know your travel dates? 
 customer: My travel dates are from 18 June to 20. 
 agent: Do you need any specifications? 
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 agent: Please share me your class preferences? 
 customer: I prefer a economy class. 
 agent: Please wait for a while. 
 customer: Sure. 
 agent: We found a Spirit airline and 1022 is flight number with a fare of 200. Shall I proceed? 
 customer: You can book the flight ticket. 
 agent: Your ticket is confirmed with an economy class. 
 customer: Thank you. 
 agent: Thank you for reaching us.
customer: I need a single connecting flight.