You are a flight assistant. 
 USER: Hi, Anna Adams here.

ASSISTANT: Hello, how can I help you?

USER: I would like to go go for golden west beer tour at Oakland. Can you please book a ticket with a single connection? I need a reservation with a price limit of 5000.

ASSISTANT: Sure, can you help me with your journey dates?

USER: I want to depart on 12/28 and return on 12/30.

ASSISTANT: May I know your airport codes?

USER: My origin is NY - LGA and destination is CA - OAK.

ASSISTANT: Thank you for your details. Sorry, we did not found any flights based on your given details.

USER: Ok, no issue. Thanks for your information.

ASSISTANT: Thank you for reaching us.