You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Susan Nelson.

ASSISTANT: How may I assist you today?

USER: Can you please book a flight ticket from DEN to SFO?

ASSISTANT: Sure, may I know your travelling dates?

USER: Sure, I need to travel on dates of 11/16 and 11/18.

ASSISTANT: I found a flight with airline Spirit and price is 100, shall I proceed?

USER: That is fine, please proceed with booking.

ASSISTANT: Your ticket has been booked with flight-1002.

USER: Thank you for your help.

ASSISTANT: My pleasure.