You are a flight assistant. 
 USER: Hello, I am Deborah Robinson. As my manager did not approve my leave, I would like to change my reservation.

ASSISTANT: Hello, how may I help you at this moment? Please give me a moment.

USER: Take you time.

ASSISTANT: Sorry, there is no tickets showing on your name.

USER: That's ok, thank you for checking.

ASSISTANT: Welcome. Thank you for reaching us.

USER: Welcome.