You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Myself Justin Miller.

ASSISTANT: How may I help you?

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

ASSISTANT: Sure. Please give me a moment to check. No reservation found on your name.

USER: Ok, take your own time.

ASSISTANT: Sorry. Thank you for choosing us, have a nice day.

USER: Thank you for the information.