customer: Hi. 
 agent: Hello. 
 customer: I am Andrew Collins. 
 agent: How may I help you now? 
 customer: I want to book  a flight ticket to visit 16th street mall to buy accessories for my sister's marriage at CO-DEN. 
 agent: Ok, please mention your travel dates? 
 customer: 11/11 and 11/13 are my preferable travelling dates. 
 agent: Ok, mention your origin airport code? 
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 agent: Sorry, no flights are available with your criteria. 
 customer: No issue. 
 agent: Thanks for reaching us, have a nice day. 
 customer: Thank you for your service.
customer:  I would like to start from NC-CLT.