You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am Michelle Phillips want to shoot my film in Oakland, can you book a ticket within the fare of 500?

ASSISTANT: OK. Please mention your preferred dates for travel?

USER: Sure, my preferred dates are 05/26 and 05/28.

ASSISTANT: Mention your boarding and landing points?

USER: Ok, my journey points are LAX and OAK.

ASSISTANT: Sorry to inform you that, no flights are available on this dates.

USER: Ok fine, thank you.

ASSISTANT: Thanks for reaching us, have a nice day.