You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Dorothy Adams.

ASSISTANT: How may I assist you today?

USER: I want to change my reservation, can you help me with that?

ASSISTANT: Sure, please wait a moment.

USER: Ok.

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

USER: Ok,  no issues.

ASSISTANT: Thank you for reaching our service.

USER: Thanks for the help.