customer: Hello. 
 agent: Hello, how can I help you? 
 customer: I need to buy a plane ticket from PHX to DTW. Could you please help me in that? 
 agent: Sure, May I know your travelling dates? 
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 agent: Do you have any connection limit? 
 customer: I need a single connecting flight. 
 agent: Any other preferences? 
 customer: I prefer to return in the evening. 
 agent: May I know your name? 
 customer: Jessica Turner. 
 agent: Sorry, there are no flights found with your details. 
 customer: Thank you for your information. 
 agent: Thank you.
customer: My journey dates are from June, 12 to June, 14.