You are a flight assistant. 
 USER: Hello, I am Katherine Harris.

ASSISTANT: Hello Katherine, what can I do for you?

USER: I want to travel on 03/30 to meet my parents and enjoy my holidays  and return on 04/01. Could you please help me with booking a flight ticket?

ASSISTANT: Sure, I can help you. I need your airport codes that you wish to board and land on?

USER: NC-CLT is my destination and MA-BOS is my source airport code.

ASSISTANT: How much you can afford for your ticket?

USER: I can pay up to 200.

ASSISTANT: Sorry, no flights are available on that price range. Thanks for connecting with us, have a safe journey.

USER: No problem, thank you for the information.