You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I amend you?

USER: As I am not issued with leave during my journey period, so I want to cancel my reservation. Can you be my helping hand?

ASSISTANT: Sure, may I know your name to check the reservation list?

USER: Sure, I am David Brown.

ASSISTANT: There is no reservation found by this name.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for reaching us.