You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Due to some entrepreneurship meeting, I am going to change my existing reservation. Can you help me?

ASSISTANT: Sure, can you please provide me your name to check the reservation?

USER: Nicole Taylor here.

ASSISTANT: Sorry, there is no reservation with your given name.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you for reaching us.