You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: Can you please help me in booking from IAD to DFW?

ASSISTANT: Sure, I am gleeful to help you. Could you please provide your travelling dates to search for the flight?

USER: My travelling dates are from Dec 28 to Dec 30.

ASSISTANT: Do you have any class preferences?

USER: Yes, I need to travel in economy class.

ASSISTANT: Can I know your name?

USER: My name is Gregory Moore.

ASSISTANT: May I know your connection limit?

USER: I need a connecting flight.

ASSISTANT: There is a connecting flight 1028 of Southwest airlines, can I proceed?

USER: Ok, you can proceed to book.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Welcome.