You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you?

USER:  I have to cancel my reservation which I have done earlier to participate in dance programme but unfortunately I have stay back here to take care of my injured friend. Can you please help me out with cancelling of my reservation?

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

USER: Thank you for your positive response.

ASSISTANT: May I know your name please?

USER: I had booked the ticket on my name Dorothy Perez.

ASSISTANT: Please wait a moment. Sorry, there are no flights found in our database.

USER: No issues with that one, thank you for your help.

ASSISTANT: Thank you for reaching our services.