You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you out?

USER: I am Pamela Green. Can you please help me with changing my recent reservation?

ASSISTANT: Sure, I will help you in changing the ticket.

USER: Thank you.

ASSISTANT: Sorry, there are no reservations found.

USER: No problem. Thanks for the help.

ASSISTANT: Thank you for reaching us.