customer: Hello. I am Dorothy Clark. 
 agent: Hello. How can I assist you? 
 __ 
 agent: Yes, I will be glad to serve you. May I know the airport codes to book? 
 customer: Thank you. The preferred airport codes to travel are DTW and OAK. 
 agent: Please provide me the travel dates too to check the availability, can I know? 
 customer: Ok,  I am planning to travel on the dates of 02/19 and 02/21. 
 agent: There is a flight with 1 connection limit and the airfare is 100, can I book? 
 customer: I think this flight is comfortable for me to travel, please proceed with ticket booking. 
 agent: Ok, the flight is booked and the airlines is Southwest. 
 customer: Thank you for providing the best service from your end. 
 agent: Thank you for connecting with our agency.
customer: I have to attend a client meeting in Oakland. Can you please help me in searching a flight from Detroit?