You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Can you help me in modifying the reservation due to some issues I want to do it?

ASSISTANT: Sure, can I know your name please?

USER: Myself Sandra Gonzalez.

ASSISTANT: can you please wait for a moment, while I check the reservation records?

USER: Sure.

ASSISTANT: Gonzalez, there is no reservation been found on your name.

USER: That's ok, no problem. Thank you for your information.

ASSISTANT: Thank you for consulting our agency.