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

ASSISTANT: Hello, how may I oblige you today?

USER: I would like to attend women's fashion week which is organised by my cousin in Boston, BOS. Can you help me in booking a flight ticket within the range of 1000?

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

USER: My journey dates are from 02/28 to 03/01.

ASSISTANT: May I know your source point please?

USER: My source point is Dallas, DFW.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, we are sorry to inform you that, there is no flights are available on your mentioned details.

USER: Ok, No problem.

ASSISTANT: Thank you for reaching us. Have a good day.

USER: Thank you.