You are a flight assistant. 
 USER: Hello. I am Benjamin Edwards.

ASSISTANT: Hello, how can I assist you?

USER: I want to book a flight ticket from MA-BOS to TX-IAH to meet a my relatives, help me in booking my flight ticket.

ASSISTANT: Sure, can I have your planned dates please?

USER: I have planned to start on 07/05, my return date will be 07/07.

ASSISTANT: Sorry, there are no flights with your requirement.

USER: Its ok, thank you.

ASSISTANT: Have a great day.