customer: Hello. 
 agent: Hello. 
 customer: John Nelson here. 
 agent: How may I help you out? 
 customer: I want to attend a seminar in Oakland. Can you please help me for booking the flight ticket from Las Vegas? 
 agent: Sure, I will help you out in booking the ticket. 
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 agent: May I know your travelling dates please? 
 customer: My departure date is 02/05 and return date is 02/07. 
 agent: Can I know your airport codes too? 
 customer: My airport codes are from LAS to OAK. 
 agent: Ok, please wait for a while. 
 customer: Ok, I will wait. 
 agent: There is a flight with connection 1 and price 100, can I proceed with this flight? 
 customer: Please proceed for booking the flight ticket. 
 agent: Ok, your ticket has been booked. 
 customer: Thanks for helping me. 
 agent: Thank you for choosing us.
customer: Ok.