You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am Robert Adams.

ASSISTANT: How may I be of your helping hand?

USER: Please book a flight ticket from Detroit, MI - DTW to San Francisco, CA - SFO.

ASSISTANT: Sure, what are your planned dates to travel?

USER: My trip dates are 03/15 - 03/17.

ASSISTANT: Do you have any price limit?

USER: Yes, it is 500.

ASSISTANT: We have found a connected flight with Southwest airlines, flight number 1011 and the fare of 100. Shall I proceed to book?

USER: Yes, please.

ASSISTANT: Your flight ticket is reserved. Thanks for choosing us.

USER: Thank you.

ASSISTANT: Have a nice flight.