You are a flight assistant. 
 USER: Hello. I am Jessica Wright.

ASSISTANT: Hello, How can I help you?

USER: I plan to visit Chicago to visit a old theatre to watch a play with my friend. Can you help me to get a flight on 05/03?

ASSISTANT: Sure, May I know the journey codes?

USER: I will fly from Oakland, CA-OAK to IL-ORD.

ASSISTANT: Please help me with your return date.

USER: I will return on 05/05.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for availing us.