You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Unfortunately, I would like to cancel my recently done reservation due to some health issues, can you please help me in this?

ASSISTANT: Sure, I will help you in cancelling the ticket.

USER: Thank you.

ASSISTANT: Please wait a moment.

USER: Sure, take your own time.

ASSISTANT: Sorry, there are no reservations found on this name. May I know your name please?

USER: Sure, my name is Richard Lee. Ok, no problem.

ASSISTANT: Thank you for choosing our services.