You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you help me in changing my existing reservation?

ASSISTANT: Let me know your name.

USER: My name is Jessica Thompson.

ASSISTANT: Reservation found. Can I know your airport codes?

USER: My airport codes of journey are MSP to MCO.

ASSISTANT: Do you have any preference?

USER: I prefer connecting flight for this trip.

ASSISTANT: Let me know your travelling dates.

USER: My preferable journey dates are Feb 15 and Feb 17.

ASSISTANT: Found ticket with JetBlue airlines for price 100 having flight number 1019.

USER: Please book my ticket in this flight.

ASSISTANT: Ticket is booked.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you.