You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I want to change my existing reservation, as my exams have postponed suddenly. Can you please help me this?

ASSISTANT: Sure, please provide your name please.

USER: Yes, I am Carolyn Garcia.

ASSISTANT: Please provide your airport codes please.

USER: My airport codes are LAS and AUS.

ASSISTANT: Please provide your travelling dates.

USER: I would like to travel on 11/02 and 11/04.

ASSISTANT: Based on request, there is a flight with price 300 and the connections 0. Shall I proceed?

USER: No, I want a flight with 1 connection.

ASSISTANT: There is no flights available for connections 1.

USER: Ok, no problem. Thank you for your information.

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