customer: Hello. 
 agent: Hello, how may I help you today? 
 customer: Can you please help me in booking my flight ticket from PHX to CLT? 
 agent: Sure, may I know your planned travelling dates please? 
 customer: My planned travelling dates are from 06/14 to 06/16. 
 agent: May I know your class preference please? 
 customer: I am looking for business class. 
 agent: Do you have any other specifications please? 
 __ 
 agent: May I know your good name please? 
 customer: Myself Dennis Brown. 
 agent: Sorry Brown, there is no flight found on your travelling dates. 
 customer: It's ok, thank you for your help. 
 agent: Thank you for reaching us.
customer: Yes, I need a single connecting flight.