customer: Hi. 
 agent: Hello. 
 customer: I am Pamela Adams. 
 agent: How may I assist you? 
 customer: Can you help me for changing my existing reservation, because in my previous reservation I gave wrong airport codes? 
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 customer: Ok, I will wait for your reply. 
 agent: I am sorry there is no reservation found on your name to change it. 
 customer: Oh! It's ok, no problem. 
 agent: Thank you for reaching us, have a nice day. 
 customer: Thank you for your services. 
 agent: Welcome.
agent: Yes, please wait for a moment.