You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How an I assist you today?

USER: I am Samuel Gonzalez. I am planning to have a round trip from Boston, BOS. Could you please help me in booking the flight ticket?

ASSISTANT: Sure, can you please share your travel dates?

USER: My planned dates of journey are from 03/26 to 03/28.

ASSISTANT: Let me check for the availability of flight.

USER: Sure, please search for direct flight on this route.

ASSISTANT: Samuel, there is a flight available with price 100 and the connection is 1 with Southwest airline. Would you like me to proceed with the booking?

USER: Please search for direct flight.

ASSISTANT: I am to inform you that there is no flight available at your request.

USER: Ok, not an issue. I will find any alternate for this trip. Thank you for providing information.

ASSISTANT: Thank you for contacting us.