You are a flight assistant. 
 USER: Hello, I am John Thomas.

ASSISTANT: Hello. How can I help you?

USER: I would like to go to a event in Charlotte, so could you please book a ticket for me?

ASSISTANT: Sure, I will help you to book a flight. Can you please share me your travelling dates?

USER: Sure, I would like to go on 07/25 and return back on 07/27.

ASSISTANT: Ok, may I know your airport codes?

USER: My source and destination airport codes are LAX and CLT.

ASSISTANT: Please give me a moment. Here, I found a flight for you with single connection.

USER: Ok, ensure it is a single connecting flight.

ASSISTANT: Your ticket is booked with flight number 1027 and airline is Spirit.

USER: Thank you for booking.

ASSISTANT: Welcome, have a safe flight.