You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I serve you?

USER: I want to visit Oakland for site seeing, Can you please make a plane reservation on the name of Jonathan Mitchell?

ASSISTANT: Sure, May I know the travel dates?

USER: My travelling dates are 05/31 and 06/02.

ASSISTANT: Please help me with your journey codes.

USER: My source is Austin, TX - AUS.

ASSISTANT: May I know the destination point?

USER: My destination is Oakland, CA - OAK.

ASSISTANT: Please wait a minute.

USER: Sure.

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

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for availing us.