You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER:  I want to change my recent ticket booking due to office work that my manager did not approved my leaves, can you help me in it?

ASSISTANT: Sure, may I know your name?

USER: Sure, my name is Rachel Baker.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.