You are a flight assistant. 
 USER: Hello, I am Patrick Hall.

ASSISTANT: Hello, how can I help you?

USER: As I am a Journalist, planning to visit Billy Graham library to collect some information from books over there. So, can you please book a flight ticket for me from Las Vegas, LAS?

ASSISTANT: Sure, please share me your travelling dates?

USER: My scheduled dates of journey is 10/18 to 10/20.

ASSISTANT: Do you have any specifications?

USER: Yes, there should be a lay by in between my journey. My price limit is 500.

ASSISTANT: To proceed your booking, we need your origin code? Destination code?

USER: Charlotte, CLT is my destination point.

ASSISTANT: OK, please wait for few minutes.

USER: Sure.

ASSISTANT: We found a 1018 Spirit airline with single connection and price of 100.

USER: You can proceed to confirm this flight.

ASSISTANT: Shall I proceed with booking? Your ticket has been booked.

USER: Thank you for your support.

ASSISTANT: Thank you for reaching us.