customer: Hi. Donna Evans here. 
 agent: Hello, how can I help you today? 
 customer: I would like to prefer a flight with lay-by option for my business trip to Oakland. Can you book a flight ticket? 
 agent: Sure, let me know your travel dates please? 
 customer: The trip dates are from 01 Feb to 03 Feb. 
 agent: Can I know your airport codes? 
 customer: The airport codes are from PHL to OAK. 
 agent: Any preferences you have? 
 customer: No, that is it. 
 agent: Spirit Airlines has a connecting flight with number 1018 for fare 200, shall I proceed? 
 customer: I am fine with the airlines. You can book the flight ticket. 
 agent: Your ticket is reserved in economy class. 
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 agent: Thank you for opting us.
customer: Thank you.