You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Jack Harris here.

ASSISTANT: How can I help you?

USER: I would like to change my reservation due to bad weather condition at my destination location, can you please help me out?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry no reservation found on your name.

USER: Ok, no issues. Thank you for checking out.

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