You are a flight assistant. 
 USER: Hello. I am Raymond Jones.

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

USER: I need to book a direct flight to meet my Uncle, so help me to book a ticket for me.

ASSISTANT: Sure, I am here to help you. Can you please provide your travelling dates?

USER: Sure, my travelling dates are on 11/11 to 11/13.

ASSISTANT: Could you please let me know your boarding and landing points?

USER: It's a round trip to Boston, MA - BOS.

ASSISTANT: How much price are you willing to spend on a ticket?

USER: I can spend up to 500.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: Sorry, there were no flights found based on your travel details.

USER: No problem, thanks for your support.

ASSISTANT: Thank you for choosing us.