You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: I need you to book a flight ticket. Please help me.

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: December 6 and 8 are my planned travel dates.

ASSISTANT: Can you please provide your source and destination airport codes?

USER: MSP and BOS are my in and out airport codes.

ASSISTANT: Do you have any airline preferences?

USER: I wish to fly in a economy class airlines.

ASSISTANT: Are you looking for a direct flight or connecting flight?

USER: I need a direct flight.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: Nothing much to state.

ASSISTANT: Can you please provide your name to proceed further?

USER: Nicholas Martinez is my name.

ASSISTANT: Sorry, there are no flights available at your request.

USER: Thant' ok. Thank you.

ASSISTANT: Thank you for contacting us, have a nice day.

USER: You are welcome.