You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Patricia Carter.

ASSISTANT: What type of service do you want from our travel agency?

USER: My father had booked me a flight ticket to take me with him to buy a new Audi car but I met with an accident and doctor told to take bed rest, so he is not taking me with him, can you please cancel my ticket?

ASSISTANT: Sure, I am happy to help you with the ticket cancellation.

USER: Thank you for your positive response.

ASSISTANT: Can you please allow me sometime to search your ticket status?

USER: Sure, take your time.

ASSISTANT: I am happy to inform you that, I have found your ticket and I have successfully cancelled your ticket.

USER: Thank you for your quick service in my flight ticket cancellation.

ASSISTANT: You are most welcome. Thank you so much for contacting our travel agency. Have a nice day.

USER: Welcome.