You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, what kind of help you are looking for?

USER: I am George Collins. Please change my existing reservation due to bad weather condition.

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry we did not find any reservation against your name.

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you for reaching us.