customer: Hello, I am Raymond Allen. 
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 customer: I need to attend my sisters wedding at Charlotte, NC-CLT on 03/31, so could you help me with the booking? 
 agent: Sure, could you please provide your source city? 
 customer: Source city will be San Francisco, CA-SFO. 
 agent: OK, can you please provide your travel dates? 
 customer: Yes, my travelling dates are from 03/31 to 04/02. 
 agent: OK, please wait a moment. 
 customer: Sure. 
 agent: Sorry, no flights found on your dates. 
 customer: Thank you for your information. 
 agent: Thank you.
agent: Good morning Allen, how may I help you?