You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I want to change my recent reservation, can you please help me?

ASSISTANT: Sure, may I know your good name?

USER: Please check the ticket under the name Brenda Hill.

ASSISTANT: Ok, please wait for a moment.

USER: Sure, I will wait.

ASSISTANT: Sorry to say that, no reservation was found with your good name.

USER: No issue, anyway thank you for checking.

ASSISTANT: Thank you for reaching us.