You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello,. How can I render you today?

USER: Please change my existing reservation.

ASSISTANT: Sure, Let me know your name.

USER: I am Laura Harris.

ASSISTANT: Thanks for sharing your name. There is a reservation found on your name. Can you share me your further details of travel?

USER: Please book a ticket from Detroit, MI-DTW to New York, NY-JFK.

ASSISTANT: Let me know your dates of travel.

USER: Departure date is 11/30 and 12/02 is return date.

ASSISTANT: Thanks for waiting. There is a flight 1016 of JetBlue airline with the fare of 100 with the connecting flight.

USER: Please book a ticket.

ASSISTANT: Shall I proceed? Your ticket has been done.

USER: Thanks.

ASSISTANT: Thank you for availing us.