You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

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

ASSISTANT: Sure, may I know your name please?

USER: My name is Brenda Clark.

ASSISTANT: Please give me a moment.

USER: Ok.

ASSISTANT: There is no reservation found with your given name.

USER: That's ok. Thank you.

ASSISTANT: Thank you.