customer: Hello. 
 agent: Hello. How may I aid you? 
 customer: Myself Sandra Mitchell, I need to change my existing booking. 
 agent: Sure, I can help you to change the details. 
 customer: Thank you. 
 agent: May I know your name to check the ticket status? 
 customer: Sandra Mitchell here. 
 agent: Ok, please give me a minute. 
 customer: Sure, take your time. 
 agent: I have found your existing reservation. Can you please tell me your airport codes? 
 customer: ATL and LGA are the airport codes. 
 agent: Ok, can you please tell me your changed travel dates? 
 customer: February 16 and 18 are the travel dates. 
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 customer: Great! Please book this ticket. 
 agent: Ok, I have changed the details and  booked a new ticket with the flight number 1000. Have a safe flight. 
 customer: Thank you for the assistance. 
 agent: You are most welcome. Thank you for reaching us.
agent: There is a flight in the UA airlines with the connection limit 1 and the ticket fare is 200. Can I proceed with this flight?