You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Debra Allen.

ASSISTANT: What can I do for you Debra Allen?

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

ASSISTANT: Ok, please wait for a moment till I check with your previous booking.

USER: Sure, take your time.

ASSISTANT: Sorry to say, there is no flight available for your journey.

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

ASSISTANT: Have a great day ahead.