customer: Hello. 
 agent: Hello. How may I help you? 
 customer: Brenda Scott here. I want to fly from IAD to DCA. Can you check the flight availability in this root/. 
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 customer: My travel dates are 12/26 and 12/28. 
 agent: Do you have any other specifications? 
 customer: I want a flight with maximum connection of 1. 
 agent: Sorry for this inconvenience, I could not find any flight with your requirements. 
 customer: No issues, thank you for the information. 
 agent: Thank you for reaching us.
agent: Sure, I will help you in booking the ticket. May I know your travelling dates please?