You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Daniel Mitchell.

ASSISTANT: How may I assist you today?

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

ASSISTANT: Daniel Mitchell, please mention your planned dates for the following journey. Ok, let me check with your previous booking.

USER: Sure.

ASSISTANT: I am so sorry to inform you, there is no reservation found by your name.

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

ASSISTANT: Sorry for the inconvenience, have a great day.