You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: My name is Steven White. Please can you help me to change the reservation which my friend had done recently?

ASSISTANT: Sure, please wait for a while.

USER: Ok, please take your own time.

ASSISTANT: We have found your reservation, please share your new airport codes.

USER: Ok, thank you for finding my reservation. The airport codes of my origin location is LGA and destination location is ATL.

ASSISTANT: Can I know your trip dates please?

USER: My planned dates are Oct 6th and 8th respectively.

ASSISTANT: Do you have any other requirements?

USER: Yes, my planned flight connection limit is 1 and the return timing is during morning.

ASSISTANT: Ok, please wait for a while.

USER: Ok, take your time to check.

ASSISTANT: Sorry, we regret to inform you that there is no flight available as per your request.

USER: Ok, that is not a problem. Thank you for providing the information.

ASSISTANT: My pleasure.