You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Timothy Lopez.

ASSISTANT: How may I be at your service now?

USER: I am planning to go for beach festival to enjoy my holidays at Oakland, OAK. Can you please book a ticket on 05/21?

ASSISTANT: Ok. Help me with your source code.

USER: Source code is Philadelphia, PHL.

ASSISTANT: Any connection limit?

USER: I need direct flight.

ASSISTANT: Return date please.

USER: Return is on 05/23.

ASSISTANT: Thanks for waiting. We found a connecting flight.

USER: Don't proceed.

ASSISTANT: Ok.

USER: Thank you.

ASSISTANT: Thank you for opting us, have a great day.