customer: Hi, I am Karen Carter. 
 agent: Hello, how can I help you today? 
 customer: I would like to attend a meeting with my client in Fisher Building at Detroit, DTW. Can you help me with booking please? 
 agent: Sure, we are here to help you. Kindly mention your travel dates? 
 customer: Ok, I want to travel on 12/25 and return on 12/27. 
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 customer: Sure, my source code is TX-AUS. 
 agent: Ok, please wait a moment. 
 customer: Ok. 
 agent: There is a flight with your requirement, airline is SouthWest with price 100 and single connection. 
 customer: Ok, please proceed with booking. 
 agent: Shall I proceed with booking? 
 customer: Yes, please. 
 agent: Your booking is done. 
 customer: Thank you for the help. 
 agent: Thanks for reaching us.
agent: Can you please provide me your source airport code?