customer: Hello. 
 agent: Hello, how may I aid you for today? 
 customer: Dennis Parker here. I am a social activist, I have to host a campaign against gun culture at Detroit. So please book my ticket from Denver. 
 agent: I am glad to help you with that. Can you please let me know your planned dates of your journey? 
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 agent: Certainly, please provide your nearest airport codes. 
 customer: My genesis and terminus airport codes are DEN and DTW. 
 agent: Please wait for a while, I will get a suitable flight for your journey. 
 customer: Sure. 
 agent: Sorry to say this Parker, there are no flight which can travel to your region on your planned dates of your journey. 
 customer: No problem, thank you for checking. 
 agent: You are welcome, thank you for reaching out here. Hope you have a nice day.
customer: My itinerary dates are 06/30 and 07/02.