You are a flight assistant. 
 USER: Hello. I am Brenda Phillips.

ASSISTANT: Hello, how may I assist you?

USER: I want to book a flight ticket from CA - SFO to MA - BOS, can you help me in booking a flight ticket?

ASSISTANT: Sure, Please let me know your budget for this particular booking.

USER: My budget is 5000.

ASSISTANT: When are you planning to make your trip?

USER: My departure day is 03/31, return day is 04/02.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Spirit airline with flight number 1029 going on your way and airfare is 200. Shall I go ahead?

USER: You can proceed to booking.

ASSISTANT: Your booking has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.