You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Shirley Wright.

ASSISTANT: How may I help you out?

USER: Can you please help me to cancel the past ticket? Because I am unable to catch the flight due to some health issues.

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

USER: Thank you for accepting my request.

ASSISTANT: Sorry, there are no reservations found.

USER: It's ok, not a problem. Thank you for your time.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.