You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Brandon Martin.

ASSISTANT: How can I assist you today?

USER: I am unable to travel at this moment due to heavy rainfall, so can you help me for cancelling my existing reservation?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please wait a moment, I will check your reservation status.

USER: Sure.

ASSISTANT: There is no previous reservation available in your name Brandon Martin.

USER: Oh! It's ok no problem, thank you for your services.

ASSISTANT: You are welcome.