customer: Hi. Donald Lee here. 
 agent: Hello, how may I help you? 
 customer: I want to travel in a flight to meet my father, will you help me? 
 agent: Sure, may I know your travelling details? 
 customer: I want to travel on 11/21 to 11/23. 
 agent: OK, wait for a minute. 
 customer: My airport codes are from LAS to DTW. Sure. 
 agent: Yes, I found a flight-1007 with delta airlines, can I proceed? 
 customer: Yes, proceed. 
 agent: Yes, your ticket is confirmed. 
 customer: Thank you for your help. 
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 customer: Welcome.
agent: Thank you for contacting us.