customer: Hello. 
 agent: Hello, how may I help you today? 
 customer: Can you please help me in booking a flight ticket to AUS from IAH? 
 agent: Sure, may I know your dates of journey please? 
 customer: My preferred travel dates are from Jul 21 to Jul 23. 
 agent: Do you have any other specifications please? 
 customer: I would like to return in the evening. 
 agent: May I know your name please? 
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 agent: Are you expecting any other requirement? 
 customer: No. 
 agent: Sorry to say, that there is no flight found as per your travelling details. 
 customer: Ok, no issues. Thank you. 
 agent: You are welcome.
customer: I am Amanda Harris.