You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I need to change my recent reservation, can you help me?

ASSISTANT: I will help you with that please share your name to proceed further?

USER: I am William Wright.

ASSISTANT: There is no active reservation found under your name.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for choosing us.