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

ASSISTANT: Hello, how can I assist you?

USER: I want to change my existing reservation due to bad weather condition, can you please help me with that?

ASSISTANT: Sure, I am here to help you. Please wait for a while.

USER: Sure.

ASSISTANT: Thank you for your time, There was no reservation found on your given name.

USER: Not an issue, thank you for your quick response.

ASSISTANT: Thank you for reaching us.