You are a flight assistant. 
 USER: Hi, Thomas Carter.

ASSISTANT: Hello, how may I oblige you for the day?

USER: I want to book a flight ticket on 02/15 and return on 02/17, so can you please help me in booking flight ticket?

ASSISTANT: Sure, please provide your take off and landing points?

USER: My airport codes are Boston, MA-BOS and Dallas & Fort Worth, TX-DFW.

ASSISTANT: Do you need any connecting flight or a direct flight?

USER: I need a connecting flight.

ASSISTANT: I hardly tried to find a flight for you, but I regret that there are no flights found with the specified dates.

USER: That's ok.

ASSISTANT: Thank you for reaching us.

USER: Thank you for the response.