customer: Hello. 
 agent: Hello. How may I help you? 
 customer: I am Paul Scott,want to travel from OAK to IAD. 
 agent: So, I want to book you a flight ticket? 
 customer: Yes. 
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 customer: Sure,my travelling dates will be from 01/18 to 01/20. 
 agent: Do you have any limitations on your price and connectionlimit? 
 customer: The flight should be with 1 connection and the price should be with in 200. 
 agent: Paul Scott unfortunately there is no flights which matches your requirements. Thank you for reaching us. 
 customer: It's OK.
agent: Sure, I will can you provide me your travelling dates?