You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I want to change my existing reservation due to heavy rainfall, can you please help me with that?

ASSISTANT: Sure, I am here to help you out. Please provide me your name to check the reservation status.

USER: My name is Lisa Adams.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no active reservation found on your name.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for reaching us.