You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Anna Edwards this side, I am looking to travel from DEN to PHL, can you help me by booking a ticket?

ASSISTANT: Sure, may I know your travel dates please?

USER: I am planning to start my journey on 01/22 and return back on 01/24.

ASSISTANT: Ok, hold on for a moment. Let me check.

USER: Ensure that fare is within 1000.

ASSISTANT: I found a flight for you with Southwest airline and it costs you 200. Shall I proceed?

USER: Yes, please book 1 ticket for me.

ASSISTANT: Your ticket has been booked with 1011 flight number.

USER: Thank you for your assistance.

ASSISTANT: Welcome.

USER: Welcome.