You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: I want to book a  direct flight ticket to attend a food fest at MA-BOS.

ASSISTANT: Ok, may I know your preferable travelling dates?

USER: 12/25 and 12/27 are my preferrable travelling dates.

ASSISTANT: Let me know your good name please.

USER: Katherine Perez here .

ASSISTANT: Could you please share your airport codes?

USER: I would like to board from NC-CLT.

ASSISTANT: Please mention if you need a halt in between your journey.

USER: I need a direct flight.

ASSISTANT: Ok, please wait a minute.

USER: Ok.

ASSISTANT: Thank you for being wait. There is no flight available with your request.

USER: No issue. Thank you for your response.

ASSISTANT: Thank you for availing us.