You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Shirley Young.

ASSISTANT: How can I assist you today?

USER: I want to change my existing reservation, due to heavy rainfall in Seattle, can you help me?

ASSISTANT: Sure, I am glad to help you. Please allow me a moment.

USER: Thank you. Sure, take your time.

ASSISTANT: Thank you for your patience.

USER: Thank you for your help.

ASSISTANT: Sorry Young to inform you that there is no reservation found under your name in our database.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for reaching us. Have a great day.