customer: Hi. 
 agent: Hello, how can I serve you the best today? 
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 agent: Sure, please share me your trip dates. 
 customer: The travel dates are from 12/22 to 12/24. 
 agent: Do you need direct flight or connecting flight? 
 customer: I need a direct flight. 
 agent: For booking, we need your good name. Please mention it. 
 customer: Helen Hall here. 
 agent:  Would you let us know if you have any other preferences? 
 customer: No. 
 agent: Sorry to say that, there are no flights available on the routes of your journey. 
 customer: That's ok, thank you for your help. 
 agent: Thank you for choosing us.
customer: I would like to book a ticket from ORD to DTW, can you please help me with that?