You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: Gary Young here. I want to change my reservation today due to my wife's health issues, can you help me?

ASSISTANT: Sure, give me a minute.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found under your given name.

USER: Ok, please. Sorry, no issues. Thank you for checking with availability.

ASSISTANT: Thank you for reaching us.