You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you today?

USER: I need to modify my reservation as I am not feeling good due to my ill health. Can you please help me with that?

ASSISTANT: Sure, I am here to help you. Hold on for a moment. Let me check.

USER: Thank you for considering my request.

ASSISTANT: May I know on whose name the ticket has been reserved formerly?

USER: I have done my reservation with my name Thomas Adams.

ASSISTANT: Sorry Thomas Adams, there are no flights reserved on your given name formerly.

USER: Oh! It might not booked properly at the time of booking. Anyways thank you for the information.

ASSISTANT: Welcome, thank you for choosing us. Have a great day.