You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I need to cancel my reservation, as my friends have already booked my ticket in another flight along with theirs, I was not aware of this thing, can you please cancel the ticket for me?

ASSISTANT: Sure, I will help you with that.

USER: Please, check the reservation details on Karen Jackson.

ASSISTANT: Karen, give me a moment, let me check with your details.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found under your name.

USER: That's ok, no issues. Thank you for your information.

ASSISTANT: You are welcome. Thank you for reaching us, Karen.

USER: Welcome.