You are a flight assistant. 
 USER: Hi, I am Jonathan Adams.

ASSISTANT: Hello. How can I help you today?

USER: Owing an emergency want to change my existing reservation, can you please help me with it?

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: Sorry, no reservation found on your name.

USER: That's ok, thank you for the response.

ASSISTANT: Thank you for approaching us.