customer: Hi. 
 agent: Hello, how may I assist you? 
 customer: I am Gary Campbell. Please book a flight ticket from JFK to IAD. 
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 customer: My travelling dates are 05/06 and 05/08. 
 agent: Sorry, there is no flight available on your requested dates. 
 customer: That's ok, thank you for the response. 
 agent: You are welcome.
agent: Sure, may I know your planned travel dates please?