customer: Hi. 
 agent: Hello. How may I assist you today? 
 customer: I am Kimberly Smith. Please help me to book a flight ticket from PHL to ORD. 
 agent: Sure, may I know your travelling dates? 
 customer: My journey dates are from Dec, 05 to Dec, 07. 
 agent: Is there any particular timings in your departure and arrival? 
 customer: I need to return in the evening. 
 agent:  Do you need any specifications for this reservation? 
 customer: I need a business class to fly and I prefer single connecting flight. 
 agent: Please wait a moment. 
 customer: Ok. 
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 customer: No problem, thanks for your information. 
 agent: Thank you for reaching our service.
agent: Sorry, there are no flight tickets available on your journey dates.