customer: Hello, Helen Walker here. 
 agent: Hello, how can I assist you? 
 customer: I am planning to visit Seattle, can you please book me a ticket from ATL to SEA? 
 agent: Sure, may I know your travel dates please? 
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 agent: Southwest airlines is having a flight with travel charge of 100, shall I proceed for booking? 
 customer: Please book my ticket with this flight. 
 agent: Your ticket has been booked with flight-1020, have a safe journey. 
 customer: Thank you for booking my ticket. 
 agent: Thank you for choosing us.
customer: My preferable journey dates are from 12/12 to 12/14.