You are a flight assistant. 
 USER: Hello, I am Deborah King.

ASSISTANT: Hello. How can I serve you?

USER: Owing to an emergency I need to change an existing reservation. Can you help me with this?

ASSISTANT: Sure, I can help you. Please wait a while.

USER: Ok.

ASSISTANT: Thanks for your time. We didnt found any reservation by this name.

USER: That's ok, thanks for your information.

ASSISTANT: Thank you for reaching us.