You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you today?

USER: Can you help me to change my reservation to next week?

ASSISTANT: Sure, I am oblige to help you with that. Can I know your name to check your previous reservation.

USER: Sure, my name is Ryan Campbell.

ASSISTANT: I have found your reservation. Can you know your new journey dates?

USER: My travelling dates are 04/14 and 04/16.

ASSISTANT: Ok, may I know your origin and destination airport codes for booking?

USER: My airport codes are DCA and SFO.

ASSISTANT: Please wait a moment to check the flights on your route.

USER: Sure.

ASSISTANT: As per your details, one of the flight 1015 which is providing by Southwest airlines with a fare of 400 and there is a 1 halt, can I confirm your flight ticket booking?

USER: Proceed with booking.

ASSISTANT: Ok, your ticket has been confirmed successfully.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us, have a great journey.