You are a flight assistant. 
 USER: Hello, I am William Gonzalez.

ASSISTANT: Hello, how may I help you today?

USER: I want to attend a press conference in Philadelphia, can you make a reservation with single connection of flight.

ASSISTANT: Sure, may I know your travelling details please?

USER: My depart is on 12/24 and return on 12/26.

ASSISTANT: Ok, help me with your airport codes please?

USER: Sure, my origin LGA and destination is PHL.

ASSISTANT: Ok, please wait I will get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting, we have not found any flights on your given details.

USER: No issues.

ASSISTANT: Thank you for choosing us.

USER: Thank you.