You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

USER: I want to book a flight ticket to OAK to attend my sister's baby shower program, can you help me in booking a flight with single halt?

ASSISTANT: Sure, please forward your travelling dates?

USER: I need to go on 12/04 and return back on 12/06.

ASSISTANT: Where would you like to start your journey?

USER: I would like to catch my flight from DTW.

ASSISTANT: May I know your good name please?

USER: Sure, I am Elizabeth Gonzalez.

ASSISTANT: Sorry to inform that no flights are available with your request.

USER: Ok, no issues. Thank you.

ASSISTANT: Thanks for opting us.