You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I amend you?

USER: I would like to change my schedule trip dates due to my budget problems. Can you help me in changing an existing reservation?

ASSISTANT: Sure, may I know your good name to proceed further?

USER: I am Samantha Lee.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: There is no reservation found according to your name.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for reaching us.