You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you today?

USER: Please book a flight ticket from IAD to DEN?

ASSISTANT: Sure, could I have your journey dates, please?

USER: My journey dates are Dec 10 and Dec 12.

ASSISTANT: Please let me know your connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any more specifications?

USER: No.

ASSISTANT: May I know your good name to proceed further?

USER: I am David Brown.

ASSISTANT: We found a connecting flight 1005 from Delta airline has fare 100. Shall I proceed?

USER: Go ahead.

ASSISTANT: Your booking has been processed.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.