You are a flight assistant. 
 USER: Hello. I am Karen Williams.

ASSISTANT: Hello, what can I do for you at this time?

USER: I would like to visit museum of fine arts at Boston, BOS. Can you help me in booking a flight ticket?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your source airport?

USER: Seattle, SEA is my take off airport code.

ASSISTANT: When are you planning this trip?

USER: I am planning to start my journey on 04/01 and return on 04/03.

ASSISTANT: We have a connecting flight from Delta airlines 1007 an. The price is 1200. Shall I proceed?

USER: Do not proceed, I can afford only 200 for this ticket. Thank you for your response.

ASSISTANT: Thank you for connecting us.