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

ASSISTANT: Hello, what can I do for you now?

USER: I would like to visit Boston Harbour Island with my cousin, will you help me out in booking a flight ticket?

ASSISTANT: Sure, may I know your airport abbreviates?

USER: Ok, my source airport is Philadelphia, PHL. And my destination code is Boston, BOS.

ASSISTANT: On what dates would you like me to book a flight ticket for you?

USER: I will travel on 12/27 to reach Boston and return on 12/29.

ASSISTANT: Do you need any stopover in between journey?

USER: No, I need a direct flight.

ASSISTANT: Ok, please wait for sometime.

USER: Sure.

ASSISTANT: There is a flight found in Spirit airline of flight number 1018 and fare is 100 that matches your details. Shall I proceed for booking?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been reserved.

USER: Thank you.

ASSISTANT: Thanks for communicating us, have a great day.