You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

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

ASSISTANT: Sure, I will help you. Please provide your name.

USER: Sure, my name is Cynthia Roberts.

ASSISTANT: Cynthia, no reservation has been found on your name.

USER: That's ok, thank you.

ASSISTANT: Thank you for approaching us.