You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I would like to change my reservation, can you help me out in amending my reservation?

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

USER: Thank you for considering my concern and Myself Gregory Phillips.

ASSISTANT: Please allow me a moment. Gregory Phillips, there is no reservation found under your name.

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

ASSISTANT: Thank you for contacting us.