You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I support you?

USER: I want to change my reservation, due to an important meeting at office. Can you help me with that?

ASSISTANT: Sure, I am happy to help you. May I know your name?

USER: Sure, I am Frank Scott.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for your patience, There was no reservation found on your name.

USER: Ok, no issues. Thanks for your assistance.

ASSISTANT: Thank you for choosing us.