You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

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

ASSISTANT: Sure, may I know your name to check for the previous reservation?

USER: Ok, my name is Rachel Turner.

ASSISTANT: Please allow me a moment.

USER: Sure, I will wait.

ASSISTANT: There is no reservation found under your name.

USER: Ok, no problem. Anyways, thank you for your service.

ASSISTANT: Thank you for contacting us.