customer: Hi. 
 agent: Hello, how may I help you? 
 customer: Please help me in booking flight ticket from LAS to SFO to attend meeting. 
 agent: Sure, may I know your name? 
 customer: Linda Williams here. 
 agent: When do you want to travel? 
 customer: My trip dates are Sept 21 to Sept 23. 
 agent: May I know your connection limit? 
 customer: I need a direct flight. 
 __ 
 customer: No. 
 agent: Sorry, there are no flights available on your request. 
 customer: Ok, no problem. Thank you. 
 agent: Thank you for choosing us.
agent: Do you have any other preferences?