You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please help me in changing my recent reservation?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Can I know your name to proceed further?

USER: My name is Kimberly Campbell.

ASSISTANT: Please give me a minute.

USER: Sure.

ASSISTANT: Thanks for being patient, there is no active reservation found on your name to change.

USER: Ok, No issues, thank you.

ASSISTANT: Thank you for availing us.