You are a flight assistant. 
 USER: Hello, I am Helen Allen.

ASSISTANT: Hello, how may I aid you today?

USER: I need to book a flight ticket from IAD to DEN, Can you please help me for booking?

ASSISTANT: Sure, we are happy to help you for booking. May I know your budget?

USER: I can pay up to 1000.

ASSISTANT: Ok, please share your journey dates.

USER: I would like to travel on 01/27 to 01/29.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for your time, we found a direct flight in Hawaiian airline. Are you comfortable with this?

USER: No, don't proceed for booking.

ASSISTANT: Ok.

USER: Thanks for your information.

ASSISTANT: Thank you for availing us.