customer: Hi. 
 agent: Hello, how may I aid you today? 
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 agent: Sure, please share me your trip dates. 
 customer: Sure, my travelling dates are Sept 25 and Sept 27. 
 agent: May I know your airline preferences? 
 customer: I am comfortable to travel in any airline. 
 agent: Please share me your other specifications. 
 customer: I need a single connection flight. 
 agent: For booking, we need your good name. Please mention it. 
 customer: My name is Donald Hall. 
 agent: Sorry to say that, there are no flights available on the routes of your journey. 
 customer: No problem, thank you for your information. 
 agent: Thank you for opting us.
customer: I have to attend music event at Chicago, can you please help me to book a flight ticket from DFW to ORD?