You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Owning to a emergency I want to change my existing reservation. Can you please help me with this?

ASSISTANT: Sure, we are happy to help you. Can I know your name?

USER: Myself Anna Robinson.

ASSISTANT: Thank you. Please wait, let me check your reservation status.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found under your name in our database.

USER: Ok, not an issue. Thank you for checking.

ASSISTANT: You are welcome and thank you for choosing us.