customer: Hello. 
 agent: Hello. How can I aid you? 
 customer: I am Patrick Clark. I want to book a ticket from DEN - IAH. Can you please help me with this? 
 agent: Sure, I can help you. 
 customer: Thank you. 
 agent: Do you need any stop over? 
 customer: I need a stopover in between my journey. 
 agent: May I know your travelling dates? 
 customer: My travelling dates are 06/21 to 06/23. 
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 customer: Sure. 
 agent: Thanks for being waiting. Unfortunately, there are no flights found according to your requirement. 
 customer: No problem, thanks for your information. 
 agent: Thanks for reaching us.
agent: Give me a minute.