customer: Hello, I am Frank Hall. 
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 customer: I want to see the historical places in Denver, CO-DEN, can you please book me a ticket? 
 agent: Sure, let me know where are you heading from? 
 customer: I am heading from Houston, TX-IAH. 
 agent: Kindly share your journey dates. Ok, let me check what flights are available for you. 
 customer: My journey dates are from 08/10 to 08/12. 
 agent: Frontier airline with flight number 1013 is available on your route and price is 100. Shall I proceed? 
 customer: Yes, please proceed. 
 agent: Your booking has been confirmed. 
 customer: Thank you. 
 agent: Thank you for opting us.
agent: Hello, how may i help you?