You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I Support you?

USER: Due to announcement of bad weather I want to change my existing reservation. Can you please help me?

ASSISTANT: Sure, I am here to help you. May I know your name please?

USER: Jacob Hernandez.

ASSISTANT: Please stand by I will get back to you.

USER: Sure.

ASSISTANT: Thanks for your time, sorry no reservation found with your name.

USER: Ok, no issue.

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

USER: Thanks for your response.