You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Donna Allen.

ASSISTANT: How may I help you?

USER: I want to amend my reservation due to an emergency. Can you help me?

ASSISTANT: Please wait for a moment.

USER: Take your time.

ASSISTANT: There is no reservation found basis on your details.

USER: No issues. Thank you for checking.

ASSISTANT: Most welcome.

USER: You are welcome.