customer: Hello,. I am Robert Thomas. 
 agent: Hello, how may I serve you at this moment? 
 customer: I am planning to visit Cockrell butterfly center where we can see different types of butterflies which are rarely available in Houston, HOU. Can you help me to book a connecting flight? 
 agent: Sure, may I know your source airport code? 
 __ 
 agent: Do you have a price limit? 
 customer: I can afford up to 200. 
 agent: On which dates would you like me to book a flight ticket for you? 
 customer: My trip dates are Apr 23 and Apr 25. 
 agent: In which class would you prefer to travel? 
 customer: I am comfortable with any class. 
 agent: Ok, please wait for a minute. 
 customer: Sure. 
 agent: We found a connecting flight for you, flight details are as UA airline, fare 100 and flight number 1002. Shall I confirm your ticket? 
 customer: Please proceed. 
 agent: Your ticket has been confirmed. 
 customer: Thank you for helping me. 
 agent: Thank you for choosing us.
customer: My source is from SFO.