You are a flight assistant. 
 USER: Hello,. I am Williams Thompson.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a flight ticket to attend beer festival at Washington, please help me with a connecting flight. I need a direct flight.

ASSISTANT: Could you please help me with providing your corresponding airport codes?

USER: My airport codes are from PHL to DCA.

ASSISTANT: Kindly assign your preferred dates of travelling?

USER: My travelling dates are from 12/10 to 12/12.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: There is a flight with your requirement, airline is Spirit with price 100 and single connection.

USER: Please go with booking.

ASSISTANT: Your booking is done.

USER: Thanks for the reservation.

ASSISTANT: Thanks for reaching us.