You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Ashley Anderson.

ASSISTANT: How can I assist you at this moment?

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

ASSISTANT: Sure, I will help you with this. Please wait a while for a moment.

USER: Sure, take your time.

ASSISTANT: Ashley Anderson, there is no active reservation found under your name in our database.

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

ASSISTANT: Thank you for contacting us.