customer: Hello. 
 agent:  Hello, how can I aid you? 
 customer: I am Jack Green. I would like to change my existing reservation, due to sudden demise of my grand father. Can you please help me? 
 agent: Ok, please wait. 
 customer: Sure, take your own time. 
 agent: Your reservation found, can you please share your details? 
 customer: My airport codes are IAH and HOU? 
 agent: May I know on which dates you are willing to travel? 
 customer: My trip dates are Feb 02 and Feb 04. 
 __ 
 customer: My return time is evening. 
 agent: Do you require any specifications in your journey? 
 customer: I need a connecting flight. 
 agent: Sorry, no flight is available for you as per your requests. 
 customer: That's ok, thank you for your information. 
 agent: Thank you.
agent: May I know your departure time and arrival time?