You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: Patricia Lopez here. I would like to book a ticket to San Francisco on the occasion of my friends marriage ceremony.

ASSISTANT: Sure Lopez. I here to help you. Could you please help me with your travelling dates?

USER: My itinerary dates are Mar 12 and Mar 14.

ASSISTANT: Ok, may I know your travelling airport codes?

USER: My genesis and terminus airport codes are DFW and CFO.

ASSISTANT: Ok, please recheck the destination airport code.

USER: I am sorry. Codes are DFW and SFO, thank you for correcting me.

ASSISTANT: Ok, please hold on.

USER: Sure, take your time.

ASSISTANT: There is a AA 1023 airline with fare of 200 and  a halt in between the journey.

USER: Please proceed with the booking.

ASSISTANT: Your booking has been confirmed on name of Patricia Lopez.

USER: Thank you very much for your help.

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