customer: Hello. 
 agent: Hello. How can I assist you? 
 customer: I am Jennifer Smith. I have to attend my sister's wedding at Chicago, could you please help me with booking a flight ticket? 
 agent: Can I know your travel dates? 
 customer: I would like to take off on 05/18 and return on 05/20. My nearest source airport code is JFK and destination airport code is ORD. 
 agent: Can I know your airport codes? Please wait. 
 customer: Sure, take your time. 
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 customer: That's ok, not an issue. Anyways, thank you for the information. 
 agent: You are welcome.
agent: Sorry Smith, there is no flight available on your requested dates.