You are a flight assistant. 
 USER: Hello. I am Emma Anderson.

ASSISTANT: Hello, how may I assist you today?

USER: I want to meet my family at Oakland, OAK. Can you help me in booking on 10/31?

ASSISTANT: Sure, will you share return date?

USER: My return date is 11/02.

ASSISTANT: May I know your price limit?

USER: Make sure that Price limit is 500.

ASSISTANT: Where do you want to board ?

USER: I am boarding at Houston, IAH.

ASSISTANT: Give me a minute.

USER: Sure.

ASSISTANT: Sorry, there are no flights available at present.

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you.