You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Brain Smith here.

ASSISTANT: How can I help you at this moment?

USER: I need to cancel my recent reservation due to some health issues, could you help me in cancellation?

ASSISTANT: Sure, I will help you in cancelling your reservation. Please give me a moment to check your reservation status.

USER: Sure, take your time.

ASSISTANT: Brian Smith, there is no active reservation found under your name in our database.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for contacting us.