You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Actually, I want to change my reservation which is done recently due to some health issues, can you please help me out?

ASSISTANT: May I know your name?

USER: Sure, my name is Nicole Lopez.

ASSISTANT: Ok, please wait for a moment.

USER: Sure, I will wait.

ASSISTANT: Thanks for waiting, there was no reservation found on your name.

USER: Ok, no problem.

ASSISTANT: Thank you for choosing us.

USER: Anyways, thank you for your service.