You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you please help me to change my reservation?

ASSISTANT: Sure, may I know your name?

USER: My name is Kimberly Scott.

ASSISTANT: Can I know your new airport codes?

USER: Sure, my source point is EWR and destination point is AUS.

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: My travelling dates are on May 11 and May 13.

ASSISTANT: Do you have any requirements?

USER: I need a direct flight.

ASSISTANT: Sorry to say, no flight is available for you.

USER: Ok, not a problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you.