You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you today?

USER: I am planning to go culture, heritage and folk festivals with my friends. Can you help me to book a ticket?

ASSISTANT: Sure, could you please provide your name to proceed?

USER: Brandon Martinez here.

ASSISTANT: Ok, can you please share your dates of travelling?

USER: Dates are 01/23 and 01/25.

ASSISTANT: Sure, may I know your budget for ticket?

USER: Price should not cross 500.

ASSISTANT: Please mention your journey locations?

USER: My airport codes are DTW-SFO.

ASSISTANT: Do you have any preference connections?

USER: No, I do not have any preference in connections.

ASSISTANT: Ok, please wait for a while, let me check the flight availability?

USER: Sure.

ASSISTANT: Thanks for your valuable time, we are glad to notify you that we have found a direct flight of Delta airline, flight number-1002 and price limit is 200. Would you like me to proceed?

USER: Please proceed.

ASSISTANT: Sure, your seat has been reserved.

USER: Thank you so much.

ASSISTANT: Thank you for opting us, have a safe and happy journey.