customer: Hello, I am David Parker. 
 agent: Hello, how may I assist you? 
 customer: Can you book a ticket from IAH to SEA? 
 agent: Sure, may I know your travel dates please? 
 customer: I am planning to start on 07/14 and return back on 07/16. 
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 customer: Take your time. 
 agent: Sorry Parker, there are no flights available on your requested dates. 
 customer: No issues. Thank you for checking. 
 agent: Welcome.
agent: Ok, hold on for a moment. Let me check the best flight for you.