You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: My name is Nicole Campbell, I would like to change my reservation due to health issue.

ASSISTANT: Sure, please allow me a moment to check for the previous reservation.

USER: Sure, take your time.

ASSISTANT: Nicole, there is no reservation found under your name.

USER: Not an issue, thank you so much.

ASSISTANT: Thank you for reaching us.