customer: Hi. 
 agent: Hello. 
 customer: Nancy Green here. 
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 customer:  I am planning to book a ticket to attend a music event at IAD. Can you please help me out to book a ticket from PHL? 
 agent: Sure, I will help you. Can I know your travelling dates? 
 customer: Ok, my travelling dates are 03/11 and 03/13. 
 agent: Sorry Green, there are no flight's available based on your traveling dates. 
 customer: No problem. Thank you. 
 agent: Thank you for reaching us.
agent: How may I help you?