You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: My name is Melissa Edwards, I want to book a flight ticket in economy class to visit Dallas for vacation. Can you book a flight for me?

ASSISTANT: Sure, please share your airport codes.

USER: My source point is SFO and my destination is DFW.

ASSISTANT: Can I have your travelling dates?

USER: I need a flight on Oct 30 and return flight on Nov 1st.

ASSISTANT: Do you need any specifications?

USER: I need a flight with single connection.

ASSISTANT: There is a flight in economy class with Spirit airlines and ticket fare of 200. Shall I proceed?

USER: Please proceed with booking.

ASSISTANT: Your ticket is confirmed with flight 1000.

USER: Thank you for helping me.

ASSISTANT: Thank you for choosing us.