You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Katherine King. I want to change my reservation, due to heavy rainfall in Seattle, can you help me?

ASSISTANT: Ok, please wait for a moment. Let me check for the availability.

USER: Sure.

ASSISTANT: Sorry, no reservation in our data base by your name.

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

ASSISTANT: Thank you for approaching our agency.