You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I am Karen King. I need to amend my reservation due to some crisis in my location, can you help me out please?

ASSISTANT: Ok, I will change your reservation. Please wait a moment.

USER: Thank you.

ASSISTANT: There is no reservation done on the name provided.

USER: That's ok, no problem. Thank you for your help.

ASSISTANT: Thank you for choosing our agency.