You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Will you please help me in changing my reservation to other dates?

ASSISTANT: Sure, may I know your name to proceed?

USER: Sure, I am Jerry Collins from Chicago.

ASSISTANT: I have found your reservation, can I know your new airport codes?

USER: Sure, my airport codes are ORD - ATL.

ASSISTANT: May I know your travelling dates?

USER: My planned dates are on Jan 23rd to 25th.

ASSISTANT: May I know your connection preferences?

USER: I need a flight with a single connection.

ASSISTANT: Sorry to say, no flight is available for you as per your requests.

USER: No worries, thank you.

ASSISTANT: Thank you for reaching us.