You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am Catherine Green. I need to amend my reservation, can you help me out please?

ASSISTANT: Green, please give me a minute while I check for the status of your reservation.

USER: Sure.

ASSISTANT: Catherine, there is no reservation found with your details.

USER: That's ok, no problem. Thank you for your information.

ASSISTANT: Thank you for contacting us.