You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jack Clark.

ASSISTANT: How can I assist you?

USER: I want to travel from ATL to CLT. Can you help me to book a flight ticket?

ASSISTANT: Sure Jack, can I know the travel dates please?

USER: I want to travel on 10/20 and 10/22.

ASSISTANT: Ok, wait a moment please.

USER: Ok.

ASSISTANT: There is a flight in Southwest airline with price 200, can I book it?

USER: Book the ticket for me.

ASSISTANT: Your ticket has been booked with flight number 1012.

USER: Thank you for your help.

ASSISTANT: Thank you for approaching us.