customer: Hello. 
 agent: Hello. How can I assist you today? 
 customer: Please help me to book a flight ticket from PHL to EWR? 
 agent: Sure, can you please share your travel dates? 
 customer: My travelling dates are Sept 12 to Sept 14. 
 agent: May I know your connection limit? 
 customer: I need a single connection of flight. 
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 customer: I want to depart in the afternoon. 
 agent: May I know your name to proceed further? 
 customer: Helen Evans here. 
 agent: I am sorry to inform you that there is no flight available at your request. 
 customer: No problem, thank you. 
 agent: Thank you for contacting us.
agent: Do you have any other specification that you are looking for?