You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Due to bad weather conditions, I want to change my existing reservation. Can you help me out?

ASSISTANT: Sure, I can help you. May I know your name to check the ticket status?

USER: Sure, my name is Nicole Baker.

ASSISTANT: Ok, please give me a minute.

USER: Sure.

ASSISTANT: Sorry to inform you, there is no reservation found on your name in our database.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us. Have a nice day.