You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Dennis Roberts.

ASSISTANT: How may I help you, Dennis?

USER: I am planning a trip to MSP to attend a convention meeting, can you book the ticket from IAD?

ASSISTANT: Ok, can you please share me your respective journey dates?

USER: My planning dates are 01/01 and back 01/03.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: I have found a flight with AA airlines available with price 300. Shall I book the ticket?

USER: Yes, I am ok with that one, please proceed.

ASSISTANT: Your ticket is confirmed and the flight number is 1001.

USER: Thank you for your immediate service in my ticket booking.

ASSISTANT: Thank you for choosing us, have a good day.