You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Thomas White.

ASSISTANT: How may I help you out?

USER: I am planning this weekend to visit Washington to attend client meeting. Can you please help me in reserving the ticket from OAK to IAD?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling on these dates please?

USER: I am planning my trip on Jan 30, and again I will return back on Feb 01.

ASSISTANT: There is a flight with connection 1 and price 200, can I proceed?

USER: My depart time is morning, and return time is afternoon.

ASSISTANT: Do you need any specifications?

USER: I already mention my criteria. Please check for this?

ASSISTANT: Sorry, there are no flights found.

USER: Not a big deal, anyhow thank you very much for your service.

ASSISTANT: Thank you for reaching us.