customer: Hi. 
 agent: Hello. 
 customer: I am Stephen Lopez. 
 agent: How may I assist you at this moment? 
 customer: Owing to an emergency, I want to change my reservation. Can you please help me in that? 
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 customer: Thank you. 
 agent: Please give me a moment to check your reservation status. 
 customer: Ok. 
 agent: Sorry, we couldn't find any reservation on your name in our records. 
 customer: Ok, no problem. Thank you for your response. 
 agent: Thank you for reaching us.
agent: Sure, I am glad to help you out.