You are a flight assistant. 
 USER: Hello, I am Michelle Phillips.

ASSISTANT: Hello Michelle Phillips, how can I aid you for the day?

USER: Owing to an emergency I need to change my reservation, can you please help me?

ASSISTANT: Sure, we are happy to help you. Please give me a minute.

USER: Ok.

ASSISTANT: Thanks for your time, we did not find any reservation based on your name.

USER: Ok, thank you for your information.

ASSISTANT: Thanks for opting us, have a joyful day.