You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Kevin White.

ASSISTANT: How can I help you?

USER: My holiday trip has been cancelled.So,I am planning to change my existing reservation. Can you please help me with that?

ASSISTANT: Sure, please wait a moment.

USER: Sure.

ASSISTANT: Sorry White, there is no reservation found under your name.

USER: Thank you for the information.

ASSISTANT: Thank you for reaching us, have a good day.

USER: Thank you.