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

ASSISTANT: Hello, how may I render you at this moment?

USER: I am looking for a flight from Detroit, can you book me the flight ticket from DTW to BOS?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: My trip dates are from Sep 26th till Sep 28th.

ASSISTANT: Do you have any limitations?

USER: I need a flight with my budget of 200.

ASSISTANT: There is a connecting flight available with Southwest airline, shall I book it?

USER: Please proceed with it.

ASSISTANT: Your booking is done with flight number 1005. Happy journey.

USER: Thank you for your help.

ASSISTANT: You are welcome, have a nice day.