You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Can you please book a flight ticket from TX-DFW to MN-MSP?

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

USER: I have already mentioned.

ASSISTANT: May I know your travel dates please?

USER: Ok, my trip dates are from 12/03 to 12/05.

ASSISTANT: Wait for a while please.

USER: Ok, take your own time, but please book a best flight.

ASSISTANT: UA airlines is available on this route with a ticket fare of 100, Shall I proceed with that?

USER: Please proceed with that.

ASSISTANT: May I know your good name please?

USER: Myself Angela Johnson.

ASSISTANT: Your ticket has been booked with flight number 1004.

USER: Ok, please confirm that ticket. Ok, fine thank you for your help.

ASSISTANT: Thank you for approaching us.