You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I am Deborah Green. Owing an emergency want to change my reservation, can you help me with it please?

ASSISTANT: Sure, please wait for a minute.

USER: Ok.

ASSISTANT: There is no reservation available with your name.

USER: That's ok.

ASSISTANT: Thanks for availing us.

USER: Thank you for the response.