You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Dorothy Robinson.

ASSISTANT: How may I abet you today?

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

ASSISTANT: Please wait a moment, let me check with the details.

USER: Sure, take your time.

ASSISTANT: Sorry, there are no active reservations on your given name to change.

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

ASSISTANT: Thank you for reaching our service.

USER: You are welcome.