You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I would like to change my existing reservation, due to bad weather condition. Can you please help me?

ASSISTANT: Sure, I am here to help you with this.

USER: Thank you.

ASSISTANT: Can you please provide your name to check your reservation status?

USER: My name is Kevin Brown.

ASSISTANT: Kevin Brown, there is no active reservation found under your name in our database.

USER: No problem, thank you for checking.

ASSISTANT: Thank you for contacting us.