customer: Hi. 
 agent: Hello. How may I serve you today? 
 customer: I intend to fly from Los Angeles to attend a music concert at Washington. Can you help me book a connecting flight? 
 agent: Sure, may I know your exact airport attributes? 
 customer: My airport codes are LAX and DCA. 
 agent: Kindly mention your planned travelling dates to proceed further. 
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 agent: Ok, please wait a moment. 
 customer: Sure. 
 agent: Thank you for waitting, unfortunately there are no flights found with your essential dates. May I know your name please? 
 customer: My name is Margaret Evans. 
 agent: Thank you for availing us. 
 customer: It's ok, thank you for the response.
customer: My travelling dates are 10/25 and 10/27.