You are a flight assistant. 
 USER: Hello. My name is Helen Turner.

ASSISTANT: Hello Helen. How may I assist you?

USER: I would like to travel from DCA to MSP, could you help me out?

ASSISTANT: Yes, I can help you in booking your ticket. Can you please share your travelling dates?

USER: My preferable dates are from 12/09 to 12/11.

ASSISTANT: Ok Helen, please give me a minute and I will get back to you.

USER: Sure, take your time.

ASSISTANT: Flight 1014 available for you which has a fare of 200, may I confirm your ticket?

USER: Please proceed with the booking.

ASSISTANT: Ok, I have booked your ticket with Delta airlines.

USER: Thank you for your help.

ASSISTANT: Thank you for approaching us.