customer: Hi. 
 agent: Hello. 
 customer: Myself Ruth Perez. 
 agent: How may I aid you? 
 customer: I want to change my existing reservation, can you help me? 
 agent: Sure, I am here to help you out. 
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 agent: Thank you for waiting Ruth Perez, we haven't found any reservation under your name in our database. 
 customer: That's ok, no problem. It might went wrong while booking due server issues. Any way, thank you for the information. 
 agent: Thank you for reaching us.
customer: Thank you.