customer: Hello. 
 agent: Hello. 
 customer: Patricia Lee. 
 agent: How may I help you? 
 customer: I would like to travel from HOU to AUS, can you book the ticket? 
 agent: Can I know the dates? 
 customer: My preferable dates are from 04/30 till 05/02. 
 agent: Sure, please give me a while. 
 customer: Ok. 
 agent: There is no flights found on your given dates. 
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 agent: Thank you for reaching us. 
 customer: Thank you for your help.
customer: That's ok.