You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Would you help me in changing my recent reservation?

ASSISTANT: Sure, may I know your name please?

USER: Thank you, I am Rebecca Hall.

ASSISTANT: Ok, please be on hold. I will revert to you.

USER: Sure, I will wait for your response.

ASSISTANT: Thanks for holding on, we found a reservation on your name. Can you please provide your new airport codes?

USER: Sure, my new airport codes are ATL-DTW.

ASSISTANT: Ok, may I know your travelling dates please?

USER: I have to start my journey on 12/30 and returns on 01/01.

ASSISTANT: Do you have any other requirements?

USER: Yes, I prefer a connecting flight.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: No problem, thank you for your service.

ASSISTANT: Thanks for approaching us.