You are a flight assistant. 
 USER: Hi. I am Mary Rodriguez.

ASSISTANT: Hello, how may I serve you today?

USER: I am planning to meet my parents after a long time in Dallas & Fort Worth TX-DFW. Would you please aid me in making an airline reservation.

ASSISTANT: Sure, can you please provide your preferred dates of travel?

USER: My depart is on 04/25 and arrive on 04/27.

ASSISTANT: I need your selected airport code, that you wish to board from?

USER: I would like to board from Boston MA-BOS.

ASSISTANT: Do you need a halt in between your journey?

USER: Yes, I need a halt.

ASSISTANT: Ok, Please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a connecting flight in Spirit airline has fare 600. Shall I proceed with the booking?

USER: Do not proceed, I can afford up to 500.

ASSISTANT: Ok.

USER: Thank you.

ASSISTANT: Thank you for reaching us.