You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I help you?

USER: As my plan to meet my parents but due to bad weather conditions I need to change an existing reservation. Can you help me with this?

ASSISTANT: Sure. May I know your name?

USER: I am Charles Collins.

ASSISTANT: Thanks for providing your name. There is no reservation found with your name.

USER: Ok, no problem.

ASSISTANT: Thank you.

USER: Thanks for your information.