You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a flight ticket to Philadelphia to visit the barnes foundation, can you please help me with it?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Can you share me your travelling dates?

USER: My travelling dates are May 19 and 21.

ASSISTANT: May I know your source point and destination point?

USER: Airport codes are DCA and PHL.

ASSISTANT: Do you have any other specifications?

USER: I would like to depart at afternoon.

ASSISTANT: Let me know your name?

USER: My name is Shirley Baker.

ASSISTANT: Ok, wait for some time.

USER: Ok.

ASSISTANT: We found Hawaiian airline with direct flight and number 1003 fare of 100.Shall I proceed for booking?

USER: You can proceed with booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks for the help.

ASSISTANT: Thanks for approaching us.