customer: Hello. 
 agent: Hello. How may I help you? 
 customer: I would like to travel from IAD to OAK as a business trip. Can you do the reservation? 
 agent: Sure, may I know your depart and arrival dates? 
 customer: My journey dates are 10/06 and 10/08. 
 agent: Do you have any connection limit? 
 customer: I need break in my journey. 
 agent: Is there any class preference? 
 customer: I am comfortable with economy class. 
 agent: Any other specifications to be met? 
 customer: My departure time should be evening. 
 agent: May I know your name? 
 customer: Samuel White here. 
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 customer: No problem, Thanks for the information. 
 agent: Thank you.
agent: Sorry, there were no flights found on your route.