You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you please help me in booking my flight ticket from IAD to IAH?

ASSISTANT: Sure, can I know your connection limit?

USER: No, there is no specific preference regarding connections.

ASSISTANT: Sure, can you please specify me your dates of travel?

USER: My travelling dates are from 08/24 to 08/26.

ASSISTANT: Let me know your name?

USER: Myself Mark Hall.

ASSISTANT: Do you have any requirements?

USER: No.

ASSISTANT: There is a direct flight 1005 of Frontier Airlines, can I proceed?

USER: Please proceed with the booking.

ASSISTANT: Your booking is done.

USER: Thank you for your help.

ASSISTANT: Welcome.