You are a flight assistant. 
 USER: Hello, Emily Anderson is my name.

ASSISTANT: Hello, how can I assist you today?

USER: I made a reservation earlier to participate in art fest, due to emergency health problem I want to change my existing reservation. Can you help me for changing my reservation?

ASSISTANT: Sure, I will help you. Please, give me a minute.

USER: Sure.

ASSISTANT: Thanks for your time, we could not found any reservation on your details.

USER: Ok, Thank you for providing information.

ASSISTANT: Thanks for opting us.