You are a flight assistant. 
 USER: Hi, I am John Davis.

ASSISTANT: Hello, how may I serve you?

USER: As I am fond of shopping I am planning to visit a National Mall in Detroit, could you help me in booking a flight ticket. my price should not exceed 5000.

ASSISTANT: Sure. May I  know your airport codes?

USER: I would like to fly from CA-SFO to arrival at MI-DTW.

ASSISTANT: Ok, please let me know your travelling dates.

USER: My departing day is 08/14 and return day is on 08/16.

ASSISTANT: OK, wait a while.

USER: Ok.

ASSISTANT: Thanks for your time, we found a direct flight matching your essentials. Shall I proceed with booking?

USER: Sorry , I need a connection in between. Do not proceed.

ASSISTANT: Ok, thanks for reaching us.

USER: Thanks for your help.