You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Sandra Hall.

ASSISTANT: How may I assist you today?

USER: I want to book a ticket from DTW to LAS to attend seminar, can you help me in booking?

ASSISTANT: Sure, please provide me your travel dates.

USER: I am departing on Aug 04 and return on Aug 06.

ASSISTANT: Airline AA is providing flight with price 100 and connection is 1, shall I proceed?

USER: Please proceed for booking.

ASSISTANT: Your ticket has been booked with flight number 1021.

USER: Thank you for your help.

ASSISTANT: My pleasure.