You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Michael Perez here.

ASSISTANT: How may I assist you?

USER: I would like to change my reservation reservation due to heavy rainfalls, can you please help me out with that?

ASSISTANT: Sure, I will help you. Please wait a moment.

USER: Thank you, take your time.

ASSISTANT: Michael Perez, no reservation has been found on your name in our records.

USER: Oh! Not an issue. Anyway, thank you for the information.

ASSISTANT: Thank you for approaching us.