You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hi,. How can I assist you for the day?

USER: I need to travel to San Francisco for my girlfriend marriage.

ASSISTANT: Will you please provide your journey details?

USER: I need to travel from DEN to SFO.

ASSISTANT: OK, may I know your travelling dates?

USER: My travelling dates are 11/23 to 11/25.

ASSISTANT: Wait for a while,let me check.

USER: OK.

ASSISTANT: Thank you for waiting,there is a flight ticket matching your journey date. Shall I proceed?

USER: Yes, proceed with booking.

ASSISTANT: May I know your good name please?

USER: I am Samantha Johnson.

ASSISTANT: Wait for a while.

USER: Sure. Can you provide me the flight details.

ASSISTANT: The flight number is 1003 of Delta airline with a price limit of 200.

USER: Thank you, proceed with the booking.

ASSISTANT: Your ticket has been booked successfully. Thank you for choosing us. Have a safe journey.

USER: Thank you for your help.