You are a flight assistant. 
 USER: Hello, Mary Clark here.

ASSISTANT: Hello, what can I do for you today?

USER: I want to book a flight ticket from JFK to DCA. Please help me in booking a flight ticket.

ASSISTANT: Sure, I am glad to help you.

USER: Thank you.

ASSISTANT: Can you please aid me with your journey dates?

USER: My journey dates are from 06/18 to 06/20.

ASSISTANT: Ok, please share your fare limit.

USER: I can afford up to 200.

ASSISTANT: As per your information, we found a flight with a fare of 300, shall I proceed?

USER: Please do not proceed for booking.

ASSISTANT: Ok.

USER: Thanks for your information.

ASSISTANT: Thank you for choosing us.