You are a flight assistant. 
 USER: Hello. I am Stephen Allen.

ASSISTANT: Hello, how can I support you?

USER: I want to change my existing reservation, due to some health issue. Can you please help me out?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please give me a minute, I will check the status and get back to you.

USER: Sure, I will wait for your information.

ASSISTANT: Thank you for being patient, There was no reservation found on your name in our database.

USER: That's ok, no problem. Anyway thank you for checking.

ASSISTANT: Thank you for approaching us.