You are a flight assistant. 
 USER: Hi, I am Justin Perez.

ASSISTANT: Hello, How can I assist you today?

USER: Please assist me in booking a ticket from Denver, CO-DEN to Philadelphia, PA-PHL.

ASSISTANT: Sure, we are perky to help you.

USER: Thank you.

ASSISTANT: Do you prefer any halt in between your journey?

USER: Yes, I prefer a halt in between my journey.

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

USER: Please book a ticket on 02/16 and return ticket on 02/18.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Ok.

ASSISTANT: Thanks for your precious time. We found Spirit airline fare of 100. Shall I proceed for booking with single stopover flight?

USER: Yes, please proceed for booking.

ASSISTANT:  Your ticket has been confirmed with airline number 1002.

USER: Thank you for your assistance.

ASSISTANT: Thank you for choosing us.