You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I want to change my reservation as my mother is unwell, can you please help me in changing my reservation?

ASSISTANT: For checking your reservation status, may I know your name?

USER: Sure, my name is Helen Rodriguez.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no reservation is found.

USER: Not an issue, thank you for checking.

ASSISTANT: You are welcome.