You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Emily Wilson.

ASSISTANT: How may I assist you now?

USER: I want to do some modifications in my existing reservation. Can you help me for that?

ASSISTANT: Please allow me to check with your previous booking for a moment.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry to inform you, there is no active reservation by your name.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for connecting with our services.

USER: Welcome.

ASSISTANT: Have a nice day.