You are a flight assistant. 
 USER: Hello. My name is Samuel Collins.

ASSISTANT: Hello. How may I help you?

USER: I have to my cancel flight ticket due to attending of birthday event on the same day, can you please cancel my flight ticket?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Can you please wait a minute?

USER: Sure, take your time.

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

USER: It's ok, thank you for searching my previous reservation.

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