You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Myself Rebecca Hernandez.

ASSISTANT: How can I help you Rebecca?

USER: I want to change my reservation as I am unwell, can you please do that for me?

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: No reservation found under your name.

USER: Not an issue, thank you for checking.

ASSISTANT: Thank you for choosing us.