customer: Hello. 
 agent: Hello, how may I help you? 
 customer: My name is Christine Hill. I would like to travel from EWR to PHL, could you help me out? 
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 customer: My preferable dates are from 09-11 Sep. 
 agent: Sorry, there are no flights are available for given dates. 
 customer: That's ok. Thank you for your help. 
 agent: Thank you for reaching us.
agent: Sure, can I know your travelling dates?