You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

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

ASSISTANT: Sure, may I know your name?

USER: Lisa Johnson here.

ASSISTANT: Please wait for a moment to check your reservation status.

USER: Sure.

ASSISTANT: Thank you for waiting. We hardly tried to find your reservation but, no reservation has been found with your name.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.