You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: As I am a singer, I want to participate in Music festival at Denver, DEN. Can you please help me for booking?

ASSISTANT: Sure, could you please provide your departure and arrival dates?

USER: My journey dates are June 13 and June 15.

ASSISTANT: May I know your source point?

USER: My source is San Francisco, SFO.

ASSISTANT: Are you looking for any preferred class?

USER: No.

ASSISTANT: Do you have any other specifications to be met?

USER: My return time is afternoon.

ASSISTANT: Can I have your name to proceed further?

USER: Sure, I am Robert Smith.

ASSISTANT: We have found a direct flight of Hawaiian airlines, flight number-1013 class-economy return time-afternoon 17:00 hours and fare is 100. Would you like me to proceed?

USER: Yes, please proceed.

ASSISTANT: Sure, your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for approaching us.