customer: Hello. 
 agent: Hello, how may I help you? 
 customer: Can you please book a flight ticket with the name of Jason Collins to San Francisco, SFO? 
 agent: Sure, I will help you. May I know your source code? 
 customer: I am planning to board from Seattle, SEA. 
 agent: Kindly share your travelling dates. 
 customer: My depart will be on 09/15 and return will be on 09/17. 
 agent: Please wait for a while. 
 customer: Sure. 
 agent: Delta airlines provide you a flight with number 1004 and the cost of the ticket is 100. 
 customer: You can proceed to book this flight. 
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 customer: Thank you for your help. 
 agent: Thanks for availing us.
agent: Your ticket is booked.