You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be your helping hand today?

USER: I am having some important work on the date I have booked the ticket previously.

ASSISTANT: Ok.

USER:  Can you help me to cancel my ticket on the name of Patricia Jones?

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: We found your reservation and it has been cancelled successfully.

USER: Thank you.

ASSISTANT: Thank you for choosing us.