You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I'm Jonathan Hernandez.

ASSISTANT: How may I assist you today?

USER: Will you provide cancellation services also?

ASSISTANT: Yes, we will provide cancellation also.

USER: Actually I have booked a ticket on last week, but I'm not in a position to catch that flight. Please help me in cancelling my ticket.

ASSISTANT: Sure, I will help you with that, please wait for a minute.

USER: Ok.

ASSISTANT: Sorry Jonathan Hernandez, we cannot find any reservation in our database to cancel.

USER: That's ok, may be I did a wrong booking. I will recheck it once and contact you later.

ASSISTANT: That's fine. Thanks for contacting us.

USER: Thank you for your service.