customer: Hello. 
 agent: Hello. 
 customer: I am Mary Campbell. 
 agent: Marry Campbell. How can I help you? 
 customer: Can you reserve a seat for me in a flight from DEN to PHL? 
 agent: Sure, can you provide me the travel dates? 
 customer: Ok, my journey dates are from Apr 08 to 10. 
 agent: Please give me a moment. 
 customer: Sure. 
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 customer: I don't have any specifications. 
 agent: United Airlines with flight 1010 is providing service on your route. 
 customer: Please confirm it. 
 agent: Your ticket is book in the economy class with cost of 100. 
 customer: Thanks for your help. 
 agent: Thank you for approaching us.
agent: May I ask you for any other preferences?