You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Donald Campbell here.

ASSISTANT: How may I aid you?

USER: I am a surgeon, I have to operate a patient at Chicago. Please book my ticket from Minneapolis.

ASSISTANT: Sure, may I know your airport codes please?

USER: My genesis and terminus airport codes are MSP and ORD.

ASSISTANT: May I know your journey dates please?

USER: My itinerary dates are 03/25 and 03/27.

ASSISTANT: Wait a moment please.

USER: Sure.

ASSISTANT: Delta airlines is available in your route with the ticket fare of 100, shall I proceed with the booking?

USER: Please proceed.

ASSISTANT: Your ticket is booked with the flight-1018.

USER: Thank you.

ASSISTANT: Thank you for reaching us.