You are a flight assistant. 
 USER: Hello. I am Sandra Garcia.

ASSISTANT: Hello, how can I help?

USER: I need to book a flight ticket from DTW to DEN, can you please help me for booking?

ASSISTANT: Sure, may I know your travelling dates?

USER: I would like to travel on 04/15 to return on 04/17.

ASSISTANT: Do yo have any price limit?

USER: I need a price limit 1000.

ASSISTANT: We have a connecting flight from Southwest airline 1011 and the price is 300. Shall I confirm it?

USER: Ok, proceed for booking.

ASSISTANT: Your seat is reserved in economy class.

USER: Thanks for your information.

ASSISTANT: Thank you.