You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Alexander Lee from California.

ASSISTANT: How can I assist you at this moment?

USER: Due to sudden assignment of work to my by my boss, I would like to cancel my holiday trip. Can you help me in cancelling my reservation?

ASSISTANT: Sure, I will help you with this. Please be on hold for a moment.

USER: Ok, take your time.

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

USER: Its ok, no issues. Thank you for the information.

ASSISTANT: Thank you for contacting us.