You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I am Williams Allen. Will you please book a flight on 12/10?

ASSISTANT: Sure, can I have your airport codes?

USER: SEA to LAX are the airport codes.

ASSISTANT: Please let me know your return date.

USER: 12/12 is my arrival date from home town to attend the college.

ASSISTANT: There is a connecting flight with price 400, flight number is 1006. Shall I make a move?

USER: No, I need a flight with a fare of 200. Do not proceed. Thank you.

ASSISTANT: Ok, thank you.