You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

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

ASSISTANT: Sure, can I have your name please?

USER: My name is Charles Garcia.

ASSISTANT: Ok, please wait I will get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting, no flight reservation find on your name.

USER: No problem, Thank you.

ASSISTANT: Thank you for choosing us.