You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I need you to book a flight ticket from PHL to BOS. Please help me.

ASSISTANT: Can I know your travelling dates?

USER: June 03 and 05 are my planned travelling dates.

ASSISTANT: Do you have any preference?

USER: I wish to depart at afternoon in a direct flight.

ASSISTANT: Let me know your name.

USER: My name is Ryan Turner.

ASSISTANT: Found ticket with Southwest airlines for price 200 having flight number 1007.

USER: Thank you. Please book the ticket in that flight.

ASSISTANT: Ticket is booked.

USER: Thank you for the help.

ASSISTANT: Thank you.