You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Thomas Thomas here.

ASSISTANT: How can I serve you?

USER: I would like to visit World of Coca-Cola. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I can help you. Please share your travelling dates.

USER: My departure date is 12/27 and return date is 12/29.

ASSISTANT: Can I know your travelling airport codes?

USER: My airport codes are from DC-IAD to GA-ATL. Make sure my connections limit is 1.

ASSISTANT: Please wait a while.

USER: Ok, take your time.

ASSISTANT: Thanks for your time. We found a Southwest airline, flight number:1003 and the price is 300.

USER: Please proceed for booking the ticket.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for helping me.

ASSISTANT: Thank you for picking us.