You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Linda Clark.

ASSISTANT: How may I aid you?

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

ASSISTANT: Sure, we are here to help you from our agency.

USER: Thank you.

ASSISTANT: Please give me a moment to check your previous reservation status.

USER: Sure, take your time.

ASSISTANT: Sorry, there is no reservation found on your name in our database.

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

ASSISTANT: Thank you for reaching us.