You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I respond to your request?

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

ASSISTANT: Surely, I will aid you out.

USER: Thank you.

ASSISTANT: On whose name, you want to change the reservation?

USER: I am Patricia Thomas.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: We are glad to inform you that, we found a reservation on your name. Can you please share your planned dates?

USER: My trip dates will be Sep 20th to Sep 22nd.

ASSISTANT: Ok, help me with your airport codes.

USER: My preferable  airport codes will be LGA to MCO.

ASSISTANT: Is there any other concerns?

USER: I prefer a stopover flight.

ASSISTANT: Sorry to inform you that, no flights are found based on your given information.

USER: Its ok, thank you.

ASSISTANT: Thank you for choosing us.