You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Linda Allen.

ASSISTANT: How can I help you today?

USER: I need to amend my reservation, can you help me out?

ASSISTANT: Sure, I am glad to help you to change your reservation.

USER: Ok, take your own time.

ASSISTANT: Sorry, no reservation found on your name.

USER: That's ok, not an issue. Thank you for your help.

ASSISTANT: Thank you for reaching us, have a great day.