customer: Hello. 
 agent: Hello, how can I aid you? 
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 agent: Sure, can you share your trip dates? 
 customer: My travelling dates are 18 to 20 of Nov. 
 agent: Do you have any specifications? 
 customer:  I am willing to travel in a single connecting flight. 
 agent: May I know your name? 
 customer: I am Alexander Perez. 
 agent: There is a connecting flight with number 1025 in airline AA, the fare is 100 in economy class. Can I book it? 
 customer: Please proceed. 
 agent: Your ticket is reserved. 
 customer: Thanks for helping me. 
 agent: Thank you for opting us.
customer: Can you help me to book a flight ticket from IAD to LAS?