You are a flight assistant. 
 USER: Hello. I am Scott Nelson.

ASSISTANT: Hello, how may I assist you?

USER: As I am a doctor, I want to meet a patient who is suffering with serious health problem.So, can you please change my existing reservation?

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Unfortunately, there is no reservation found on your given name.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for connecting with us.