You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: Edward Garcia here. I would like to change my reservation due to some health issues, can you please help me in that?

ASSISTANT: Sure Garcia, I am ready to help you with that.

USER: Thank you.

ASSISTANT: Please wait a moment to check your reservation status.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry Edward Garcia, no reservation has found under your name to change.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for choosing us, have a good day.