You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I want to change my existing reservation, can you please help me in this condition?

ASSISTANT: Sure, we are here to help you. Please wait a moment to check your previous reservation status. May I know your name please?

USER: Sure, I'm Carol Adams here.

ASSISTANT: Yes Carol, I have found your reservation. Could you please mention your new journey details?

USER: My respective airports codes are from DTW to SEA.

ASSISTANT: Ok, may I know your preferable dates of travelling?

USER: Sure, my preferable dates are from 09/29 to 10/01. Please make sure that connection is 1.

ASSISTANT: Ok, based on your details I have found a flight for you.

USER: Please book it.

ASSISTANT: Flight number 1001 from Hawaiian airline with the fare of 100 is available for you. And your ticket is booked with that.

USER: Thank you for your support in booking a ticket.

ASSISTANT: I have changed your reservation successfully. Thank you for reaching us, have a great journey.

USER: Welcome.