You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Pamela Miller.

ASSISTANT: How may I help you?

USER: I am planning to meet my colleagues has been cancelled, due to some urgent work.So I would like to cancel my recent reservation. Could you please assist me in cancellation?

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

USER: Thank you.

ASSISTANT: Please give me sometime to check the ticket status.

USER: Sure.

ASSISTANT: Sorry to inform you, there is no reservation found with your name in our database to cancel the ticket.

USER: Ok, no problem. Thank you.

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