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

ASSISTANT: Hello. How may I help you today?

USER: I planned to attend for a wedding in DCA, can you please help me to book a flight ticket from PHL?

ASSISTANT: Sure, please mention your travelling dates.

USER: I prefer to travel on 09/23 and 09/25.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: There is a direct flight available with Delta airlines and the price is 200, can i proceed with the booking?

USER: Ok, please confirm my booking.

ASSISTANT: Your ticket has been confirmed with the flight number 1005.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing our service. Have a safe journey.