You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: My name is Samuel Roberts.

ASSISTANT: Ok.

USER: I would like to see the famous Golden Gate Bridge in San Francisco, can you please help me to book a fight from Denver?

ASSISTANT: Sure, I would be happy to help you.

USER:  Thank you.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: I will start on June 19th and will return back on June 21st.

ASSISTANT: In which class would you like me to book your flight ticket?

USER: I am ok in any class.

ASSISTANT: Let me know your connection limit.

USER: I can afford max one connecting flight.

ASSISTANT: Do you have any other requirements?

USER: Please make sure, my return time should be in the evening.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Sure.

ASSISTANT: We found 1028 Spirit airlines with single connection with economy class and depart time is 2:00 AM. Shall I proceed with the booking?

USER: Please proceed with this flight.

ASSISTANT: Your ticket has been reserved with price 200.

USER: Thank you for your prompt service.

ASSISTANT: Thank you for choosing us.