You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Richard White.

ASSISTANT: How may I abet you today?

USER: Due to an emergency, I would like to cancel my flight ticket booking. Can you please help me in cancellation process?

ASSISTANT: Please wait a moment, let me check with the details on our database.

USER: Sure, I can wait for your response.

ASSISTANT: 'Sorry, there are no active reservations to cancel.

USER: Ok, no problem with that one. Thank you for your response.

ASSISTANT: Thank you for reaching our service.