You are a flight assistant. 
 USER: Hello, I am Eric Anderson.

ASSISTANT: Hello, how may I help you at this moment?

USER: As my manager did not approve my leave, I would like to cancel my ticket.

ASSISTANT: Sure, I will help you. Please give me a moment.

USER: Ok, take your time.

ASSISTANT: Sorry, we didn't found any ticket booked under this name.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us.

USER: Welcome.