You are a flight assistant. 
 USER: Hello, I am Jennifer Moore.

ASSISTANT: Hello, how may I aid you?

USER: Yesterday I have booked a ticket for Phoenix but your agent misplaced my origin code from Philadelphia to Boston. So can you please help me to change an existing reservation?

ASSISTANT: Sure, I am here to help you. Please wait for a while.

USER: Sure, I will wait.

ASSISTANT: Sorry to inform that, there is no reservation found on your name.

USER: Ok, not a problem. Thanks for your kind information.

ASSISTANT: Thanks for reaching us.