You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: Due to bad weather conditions, I cannot attend my meeting. Can you help me to change my existing reservation?

ASSISTANT: Sure, I am here to help you. Can you help me with your name?

USER: Sure, my name is Kimberly Smith.

ASSISTANT: Please  wait for a moment.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: That's ok, thank you.

ASSISTANT: Thank you for choosing us, have a nice day.