You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am planning to visit Las Vegas with my friends. Can you help me to book a ticket?

ASSISTANT: Sure, can you provide your depart and return dates?

USER: My trip dates are 04/24 and 04/26.

ASSISTANT: May I know your journey points?

USER: My airport codes are DEN-LAS.

ASSISTANT: May I know your name?

USER: Sharon Thomas here.

ASSISTANT: There is  a flight on Delta airline, flight number as 1001 with the fare of 100.

USER: Please do the booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for availing us.