You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you for today?

USER: Due to an emergency I want to change my reservation, can you help me.

ASSISTANT: Yes, I am here to help you. Can you please help me with your name?

USER: Thank you and my name is Robert Campbell.

ASSISTANT: Sorry Robert, there is no active reservation under your name.

USER: Ok, that's fine, thank you for your help in searching.

ASSISTANT: Most welcome.