You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Brenda Williams here.

ASSISTANT: How can I help you today?

USER: Reserve a flight ticket for me that is from DTW to LAS.

ASSISTANT: Sure, may I know your journey dates please?

USER: I want to visit a casino resort in Las Vegas. So I will travel from 06/13 to 06/15.

ASSISTANT: Delta airlines is having a flight with travel charge of 100, shall I proceed for booking?

USER: Sure, you can proceed for the booking.

ASSISTANT: Your ticket has been booked with flight-1000, have a safe journey.

USER: Thanks for booking my flight.

ASSISTANT: Thank you for choosing us.