customer: Hello. 
 agent: Hello, how may I assist you today? 
 customer: Can you book a flight ticket from SFO to HOU to attend a conference meeting? 
 agent: Sure, may I know your planned travel dates? 
 customer: Feb, 12 and Feb, 14 are my planned travel dates. 
 agent: Do you have any limits on number of connections? 
 customer: Yes, I prefer to travel in connected flight. 
 agent: Do you have any airline preferences for  your journey? 
 customer: No, thanks. 
 agent: May I know your name for the documentation purpose? 
 customer: Rachel White here. 
 agent: Do you have any class specification? 
 customer: I like to travel in economy class. 
 agent: Do you have any specific depart and arrival time for this trip? 
 customer: No, thanks. 
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 customer: That's ok, thank you for checking. 
 agent: Welcome, thank you for reaching us.
agent: Unfortunately, no flights found on your specific required dates.