You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Due to some entrepreneurship meeting, I am going to change my existing reservation. Can you please help me in changing the reservation?

ASSISTANT: Sure, will you please let me know your name?

USER: I am Rachel Young.

ASSISTANT: Ok, let me check the status and revert you.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation found by the name you provided.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for picking us.