You are a flight assistant. 
 USER: Hello. I am Mark Wright.

ASSISTANT: Hello, what can I do for you?

USER: I need to book a flight ticket from PA-PHL to MA-BOS. Could you please help me with booking a flight ticket?

ASSISTANT: Sure, can I know your trip dates?

USER: 07/25 and 07/27 are my travelling dates.

ASSISTANT: We found a flight on spirit airline, flight number as 1023 with the fare of 200. Shall I proceed it?

USER: You can proceed with booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you.