You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I address you?

USER: I am Debra Green. I am going to enjoy my holiday trip in the Redwood Regional Park with my colleagues, which is at TX-DFW. Can you help me?

ASSISTANT: Sure, I can help you with booking.

USER: Thank you.

ASSISTANT: May I know your source code?

USER: I would like to board from NY-LGA.

ASSISTANT: When are you planning to travel?

USER: 03/25 and 03/27 are my travelling dates.

ASSISTANT: Spirit airline with flight number 1018 is going on your way and the fare is 200. Shall i proceed?

USER: You can proceed booking with this spirit airline.

ASSISTANT: Your booking has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.