You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: I need to change my current reservation due to urgent meeting, can you help me with that?

ASSISTANT: Sure, I am here to help you out. Please provide me your name to check whether any active reservation is found on your name or not.

USER: I am Anna Robinson.

ASSISTANT: Please allow me a moment.

USER: Sure.

ASSISTANT:  Anna Robinson, no reservation found on your name in our database.

USER: That's ok. Thank you for your service.

ASSISTANT: Thank you for reaching us.