You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today from my end?

USER: Can you help me to change my reservation because I felt sick suddenly?

ASSISTANT: Sure, I am here to help you out. Please provide me your name.

USER: Raymond Gonzalez here.

ASSISTANT: Sorry Raymond Gonzalez,  there is no reservation on your name in our database.

USER: No issue. Thank you.

ASSISTANT: Thank you for reaching us.