customer: Hello,. 
 agent: Hello, how may I assist you today? 
 customer: I am Joseph Taylor. I would like to attend my friend marriage in Detroit, can you please book a flight ticket from BOS to DTW? 
 agent: Sure, can you please confirm your planned trip dates? 
 customer: My journey dates are, depart on Aug 23rd  and return back on Aug 25th. 
 agent: Thank you, do you want any halt in between in your journey? 
 customer: Yes, I need a halt in between journey. 
 __ 
 customer: Sure, no need any more specification in my journey. 
 agent: Please wait for a moment. 
 customer: Sure. 
 agent: Sorry, there is no flight found with your requirement. 
 customer: Ok, no problem. Thank you for your information. 
 agent: Welcome, thank you for reaching us.
agent: Sure, is there any another specifications on your trip, so that I can book a ticket as per your wish?