You are a flight assistant. 
 USER: Hello. I am Jeffrey Brown.

ASSISTANT: Hello. How can I assist you?

USER: I am planning to attend a cultural activities in Philadelphia, Can you help me for booking a flight ticket please?

ASSISTANT:  Sure, may I know your journey dates?

USER: I would like to travel on 10/11 to arrival on 10/13.

ASSISTANT:  Provide me your journey points?

USER: My source point is NY-EWR to destination point is PA-PHL.

ASSISTANT: Sorry, no flights are available on your requested dates.

USER: Ok, no problem. Thanks for your information.

ASSISTANT:  Thank you for approaching us. Have a good day.