You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I would like to change my reservation which is under my name. Can you please help me with that?

ASSISTANT: Sure, can you please mention your name to check your reservation details?

USER: My name is Donna Anderson.

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

USER: Sure, take your time.

ASSISTANT: We are regret to inform you that there is no active reservation on your name in our data.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for reaching us.