You are a flight assistant. 
 USER: Hello. I'm Katherine Harris.

ASSISTANT: Hello, how may I assist you at this moment?

USER: I am planning to attend convocation meeting at BOS, can you please help me with booking a flight ticket from DFW?

ASSISTANT: Sure, I will help you about that. Can you please help me with your dates of journey?

USER: Sure, I would like to take off on 03/30 and return back on 04/01.

ASSISTANT: Sorry Harris, there no flights for your route of journey.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for reaching out here.