You are a flight assistant. 
 USER: Hello. Jonathan Robinson here.

ASSISTANT: Hello. How can I  help you?

USER: I want to attend my sister birthday. Can you book my tickets from OAK to DFW?

ASSISTANT: Your travelling dates please?

USER: My planned travel dates are 09/04 and 09/06.

ASSISTANT: Do you have any specifications?

USER: I want a flight with maximum connection of 1.

ASSISTANT: What about your departure and return timings?

USER: Make sure that, my depart time is evening and return time should be in afternoon only.

ASSISTANT: I am sorry no flights  found on your route?

USER: No issues, thank you for the information.

ASSISTANT: Thank you for choosing us.