You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I want to change my reservation due to bad weather condition, Can you assist me?

ASSISTANT: Sure, may I know your name please?

USER: Ryan martin.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry Martin, there is no reservation found as per your name in our database.

USER: No problem. thank you for searching.

ASSISTANT: Thank you for reaching us with a query.