You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: Can you please help me in changing my recent reservation?

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

USER: My name is Patricia Smith.

ASSISTANT: Sorry there is no reservation found in our database as per your request to change the reservation.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for choosing us.