You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: Sandra Johnson, here. I want to book a ticket from DEN to DFW to meet my friend.

ASSISTANT: Sure, may I know your travel dates?

USER: I am planning to travel from 09/08 to 09/10.

ASSISTANT: Based on your request there is a flight with airline Delta. Shall I proceed?

USER: Yes, please proceed for booking.

ASSISTANT: Sandra, your ticket has been booked with flight number 1005 and price is 200. Have a safe journey.

USER: Thanks for helping me. Great service.

ASSISTANT: Thanks for contacting us.