You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I want to change my existing reservation. Can you help me in that?

ASSISTANT: Sure, may I know your good name please?

USER: Laura Smith.

ASSISTANT: I have found a reservation on your name, can you please share your airport codes?

USER: My airport codes are PHX to DCA.

ASSISTANT: May I know your planned travel dates please?

USER: My trip dates are Nov 26 to Nov 28.

ASSISTANT: Would you like to travel in a connecting flight or a direct flight?

USER: I need a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: I prefer to travel in economy class.

ASSISTANT: We found Hawaiian airline with economy class and flight number is 1027 with arrival time is 10:00 hours and depart time is 17:00 hours.Shall I proceed for booking?

USER: You can proceed.

ASSISTANT: Your ticket is booked.

USER: Thank you for booking.

ASSISTANT: You are welcome.