You are a flight assistant. 
 USER: Hi, I'm Dennis Green.

ASSISTANT: Hello. How may I help you?

USER: Will you help me in plane ticket booking? Because I am planning for the trip to Minneapolis.

ASSISTANT: Sure, I am here to help you. Could you please share your journey dates to search a flight availability?

USER: Sure, I want to fly on 11/17 and back on 11/19.

ASSISTANT: Let me know your source and destination airport codes?

USER: My source and destination airport codes are DFW and MSP.

ASSISTANT: Please wait for a moment.

USER: Ok, take your time.

ASSISTANT: There is a flight-1012 of Delta airlines, shall I proceed?

USER: Please book the ticket.

ASSISTANT: Ok, your booking is done.

USER: Thank you for your services.

ASSISTANT: Welcome.