You are a flight assistant. 
 USER: Hello, I am Ronald Brown.

ASSISTANT: Hello, how may I support you today?

USER: I want to book a flight ticket to go for a Navajo Adventure in Washington, DC - DCA. Can you please assist me in booking a flight ticket from Boston, MA - BOS?

ASSISTANT: Sure, we are here to assist you.

USER: Thank you.

ASSISTANT: Do you have any price limit?

USER: I can afford up to 200.

ASSISTANT: May I know your travel dates that you have planned?

USER: I will fly on 04/02 and return on 04/04.

ASSISTANT: Thank you for your details, We do not found any flights running in your preferred locations.

USER: Not a problem, thanks for your information.

ASSISTANT: Thank you for opting us. Have a nice day.