You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Jeffrey Taylor. I am planning to attend a Music Festival in CO - DEN, could you please help me in booking a flight ticket from MA - BOS?

ASSISTANT: Sure, may I know your planned journey dates?

USER: I want to fly on 01/27 and return on 01/29.

ASSISTANT: Do you need halt in between your journey?

USER: No, I need a direct flight.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for opting us.