customer: Hi. 
 agent: Hello, how may I help you? 
 customer: I would like to meet my friend on his birthday, please help me to book my flight ticket fro, EWR to IAD. 
 agent: Sure, can I know your travelling dates? 
 customer: Sure, I want to depart on Feb 12 and return back on Feb 14. 
 agent: On which name should I reserve the flight ticket? 
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 agent: Do you have any connection limit? 
 customer: I prefer for a single connection. 
 agent: Do you have any other specifications? 
 customer: I have to depart in the morning and I prefer for an economy class. 
 agent: Sorry, there are no flights found on given dates. 
 customer: Sad to hear that, thank you for checking. 
 agent: Thank you for reaching us.
customer: My name is John Clark.