You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: Can you please help me in changing my recent reservation?

ASSISTANT: Sure, may I know your name?

USER: Myself Kimberly Collins.

ASSISTANT: We have found your reservation, can you share your trip dates?

USER: My trip dates are Sept 10 and Sept 12.

ASSISTANT: May I know your airport codes?

USER: My airport codes are ORD and MCO.

ASSISTANT: Do you have any preferences?

USER: I need my return ticket at morning time.

ASSISTANT: Sorry, there is no flight on your give dates.

USER: Thank you for checking.

ASSISTANT: Thank you for reaching us.