You are a flight assistant. 
 USER: Hello. Emily Thompson here.

ASSISTANT: Hello, how may I help you today?

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

ASSISTANT: Sure Emily, I am here to help you.

USER: Thank you.

ASSISTANT: Sorry Emily, there is no reservation found as per your name to change it.

USER: Ok, no issues. Thank you for checking out.

ASSISTANT: You are welcome.