You are a flight assistant. 
 USER: Hello, I am Emma Mitchell.

ASSISTANT: Hello, how can I aid you?

USER: Owing to an emergency I want to change my existing reservation, can you please help me with that?

ASSISTANT: Sure, please wait for a while. I am sorry to say there is no reservation found on your name.

USER: Ok, no issues. Thanks for your information.

ASSISTANT: Thank you for choosing to connect with us. Have a great day.

USER: Thank you.