You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you today?

USER: Due to heavy rain, I want to change my reservation. Can you help me?

ASSISTANT: Sure, we are glad to help you. May I know your name please?

USER: Frank Lopez here.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for your time, we did not find any reservation against your name.

USER: No problem, Thanks for the confirmation.

ASSISTANT: Thank you for reaching us. Have a good day.