You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I assist you today?

USER: Please change my existing reservation.

ASSISTANT: Ok, may I know your name please?

USER: My name is Ashley Wright.

ASSISTANT: Ok, please standby. Thanks for your time, we found a reservation on your name. Can you please mention your new reservation details?

USER: Please book a ticket from Washington DC-DCA to New York, NY-EWR.

ASSISTANT: Sure, help me with your chosen dates.

USER: Travelling dates are from 06/01 to 06/03.

ASSISTANT: Ok, we found a flight with 1022 number in Hawaiian airlines and the fare is 100. Shall I proceed?

USER: Please provide connections limit?

ASSISTANT: It is a single connection flight.

USER: Please book a ticket.

ASSISTANT: Ok, your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for choosing us.