You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

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

ASSISTANT: Ok, may I know your name please?

USER: My name is Benjamin Parker.

ASSISTANT: Please wait for a while. I will check and let you know.

USER: Ok.

ASSISTANT: Sorry, no reservation found on your name to change.

USER: That's ok. Thank you.

ASSISTANT: Thank you for reaching us.