You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I would like to change my flight reservation as I am unwell, please help me.

ASSISTANT: Ok, please can I know the name on which the reservation is done to change it?

USER: Thank you very much. I am Emma Phillips.

ASSISTANT: Ok, please wait a moment. I will check.

USER: Sure.

ASSISTANT: Sorry, there are no reservation been found to change as per the records.

USER: Not an issue. Anyway, thank you for the information.

ASSISTANT: Thank you for choosing our agency.