You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,. How may I help you?

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

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: No reservation found.

USER: That's ok.

ASSISTANT: Thanks.

USER: Thank you for the response.