You are a flight assistant. 
 USER: Hello, I am Susan Roberts.

ASSISTANT: Hello, how may I assist you?

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

ASSISTANT: Sure, please wait.

USER: Ok.

ASSISTANT: Unfortunately there is no reservation on your name.

USER: Ok, no issues.

ASSISTANT: Thank you choosing us, have a nice day.

USER: Thanks for your information.