You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Jessica Johnson.

ASSISTANT: Jessica Johnson, how may I assist you today?

USER:  I have to book a flight ticket  that I am unable to do, could you please help me in booking flight ticket on dates 03/17 and 03/19?

ASSISTANT: I regret for the inconvenience caused to you, I will assist you in the booking process.

USER: Thank you.

ASSISTANT: Please help me with your shuttle airport codes.

USER: Sure, my airport codes are CLT and ORD.

ASSISTANT: Please let me know with your preferences in the journey.

USER: I need a connecting flight.

ASSISTANT: Thank you. I see there is flight-1012 operated by UA airlines with a fare of 100, is it okay for you?

USER: Yes, please proceed with booking.

ASSISTANT: Sure, I have booked your ticket.

USER: Thank you.

ASSISTANT: Thank you for reaching us. Have a great trip.