You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Jeffrey Clark.

ASSISTANT: How may I assist you today?

USER: I have planning to meet my friend in Oakland, Can you help me for booking?

ASSISTANT: Sure, I can help you with that. Can you please mention your travel dates?

USER: Sure, my travelling dates are 03/08 and 03/10.

ASSISTANT: May I know your preferable airport code names?

USER: My travelling airport codes are ATL and OAK.

ASSISTANT: Ok, please wait  a moment, I will check flight availability in this route.

USER: Make sure that my price should not exceed 200.

ASSISTANT: Sure. Sorry for the inconvenience, no flights available in this route.

USER: That's ok, thank you for checking. Welcome.

ASSISTANT: Thank you for contacting us, have a good day.