You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I want to change my existing reservation due to some family problems. Can you please help me with this?

ASSISTANT: Sure, we are perky to help you.

USER: Thank you.

ASSISTANT: Can you please share your good name?

USER: Sure, I am Frank Anderson.

ASSISTANT: Please be on hold.

USER: Sure.

ASSISTANT: Thanks for your time, there is no reservation found on your name in our database to change it.

USER: Ok, not an issue. Thank you for checking.

ASSISTANT: Thank you for availing us.