You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Rachel Young, want to change my reservation dates. Can you please help me?

ASSISTANT: Sure, I am happy to help you. Please wait, I will check your reservation status and get back to you.

USER: Sure, take your time.

ASSISTANT: Young, I have not found any reservation under your name in our database.

USER: It's ok, thank you.

ASSISTANT: You are most welcome and thank you for choosing us.