You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you today?

USER: I want to change my recent reservation, Can you please help me in that?

ASSISTANT: Sure, may I know your good name?

USER: My name is Daniel Taylor.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no active reservation found on your name in the database.

USER: Ok, that's not a problem. Thanks for your information.

ASSISTANT: Thank you for choosing us.