You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Patrick King here.

ASSISTANT: How can I help you at this moment?

USER: Can you please help me out in changing my recent reservation? As my health is not good to do journeys right now.

ASSISTANT: Sure, I will help you with this.

USER: Sure, I'll wait for your response.

ASSISTANT: Patrick King, I have found your reservation. Can you please provide your nearest airport codes of travel?

USER: Sure, my airport codes are EWR and AUS.

ASSISTANT: Can you please provide your preferable journey dates?

USER: Yes, my departure and return dates are 11/11 and 11/13.

ASSISTANT: AA airlines is available on this route with a ticket fare of 300, shall I book your ticket?

USER: That's fine, please proceed for booking.

ASSISTANT: Your ticket is booked with flight number 1028.

USER: Thank you so much for your help.

ASSISTANT: Thank you, have a safe journey.