You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Donald Davis.

ASSISTANT: Davis, how can I assist you?

USER: I want to visit museum of fine arts at Boston, can you book a ticket within the fare of 500?

ASSISTANT: Sure, please share your travel dates.

USER: Yes, my travelling dates will be 08/01 and 08/03.

ASSISTANT: May I know your airport codes?

USER: Sure, I want to travel from DCA to BOS.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Flight 1017 of Hawaiian airlines is providing service from DCA to BOS.

USER: Ok, proceed with my booking.

ASSISTANT: Your ticket is booked, have a safe and happy journey.

USER: Thank you.

ASSISTANT: Thank you for choosing us.