You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Can you help me to change my recent reservation because my trip dates are got postponed, can you help me?

ASSISTANT: May I know your good name?

USER: I am Ruth Lopez.

ASSISTANT: Please be on hold.

USER: Sure.

ASSISTANT: There is no reservation found on your name in our database to change it.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for availing us.