You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Owing to an emergency, I want to change my existing reservation. Can you help me in that?

ASSISTANT: Sure, I am here to help you for this. May I know your name please?

USER: Emily Lewis here.

ASSISTANT: Just a moment, let me check your reservation status in our records.

USER: Ok.

ASSISTANT: Sorry for inconvenience, no reservation is found under your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you very much for approaching our agency.