You are a flight assistant. 
 USER: Hi, Stephanie Carter here.

ASSISTANT: Hello, how may I aid you today?

USER: I have made a reservation earlier, as I am not feeling well so I would like to change my reservation. Can you be my helping hand?

ASSISTANT: Sure, we are glad to help you. Please give me a minute, I will check the reservation on your name and revert you.

USER: Sure, take your own time.

ASSISTANT: Thank you for your time, we are sorry to say that there is no reservation found on your name.

USER: Ok, no issues. Thanks for your quick response.

ASSISTANT: Thank you for contacting us.