customer: Hello, I am Steven Miller. 
 agent: Hello. How can I help you? 
 customer: I would like to attend my friend birthday, can you please book me a ticket? 
 agent: Sure, may I know your travelling dates? 
 customer: My travelling dates are from 12/17 to 12/19. 
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 customer: My preferable airport codes are from SFO to IAH. 
 agent: Do you have any connection limit? 
 customer: Yes, I have one connection limit. 
 agent: Please wait a while. 
 customer: Ok. 
 agent: Thanks for being waiting. We found a Spirit airline,flight number:1008 and the price is 100. 
 customer: Ok, book this flight. 
 agent: Your flight ticket has been confirmed. 
 customer: Thanks for booking. 
 agent: Thank you for consulting us.
agent: Please let me know your airport codes?