customer: Hello. 
 agent: Hello, how can I help you? 
 customer: I am James Moore. 
 agent: Ok. 
 customer: I want to visit Denver Zoo at Denver, DEN. can you help me out? 
 agent: Sure, please provide your source. 
 customer: My source point is Chicago, ORD. 
 agent: Ok, May I know your dates of travel? 
 customer: My travelling dates are from 07/13 to 07/15. 
 __ 
 customer: Ys, I need halt. 
 agent: Ok, please wait for a while. 
 customer: Sure. 
 agent: Thank you for your time, we found a flight in 1008 UA plane with price 100. Shall I proceed for booking with a halt? 
 customer: Ok, You can proceed. 
 agent: Ok, the ticket has been booked. 
 customer: Thank you. 
 agent: Thank you for availing us.
agent: Ok, do you need any halt?