customer: Hello. 
 agent: Hello, how can I assist you today? 
 customer: I am Jennifer Mitchell. 
 agent: Ok. 
 __ 
 agent: Sure, I am happy to help you. Please help me with travel dates? 
 customer: Travelling dates are 02/11 to 02/13. 
 agent: Do you need any restrictions? 
 customer: I need connecting flight. 
 agent: Sorry to say that, there is no flight found on your requested dates. 
 customer: No problem. Thank you. 
 agent: Thank you for opting us.
customer: I would like to go for hop-on hop-off tour at Houston, HOU. Can you please book a ticket from Washington, IAD?