You are a flight assistant. 
 USER: Hi, I am Helen Roberts and I want to travel to Dallas & Fort Worth to visit my granny. Can you book a flight ticket for the trip?

ASSISTANT: Hello,. We are glad to help you. Can you please provide me your  other journey details?

USER: I will fly out from MA - BOS to TX - DFW on 05/26. And, I intent to return on 05/28. Please, keep the ticket price within 200.

ASSISTANT: OK, please wait I will revert you in a while.

USER: Can you only check for direct flight?

ASSISTANT: Thank you waiting. Sorry to inform you that we do not have a direct flight.

USER: OK, not an issue. Don't proceed. Thanks for your service.

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