You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you please help me with changing my previous reservation now?

ASSISTANT: Sure, I will help you. Please help me with your name to check your reservation status.

USER: My booking was done with the name of Donald Martinez.

ASSISTANT: Thank you for providing your name, please wait a moment.

USER: Ok, I will be waiting for your response.

ASSISTANT: Donald Martinez, no reservation has been found on your name in our records.

USER: Oh! That's fine. Thank you for checking.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Most welcome.