You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am looking for a direct flight from IAD to JFK, can you please help me to book my flight ticket?

ASSISTANT: Sure, may I know your trip dates please?

USER: I would like to depart on Aug 12th and I will return back on Aug 14th.

ASSISTANT: May I know your name please?

USER: My name is Dorothy Wright.

ASSISTANT: Ok, please wait for some time.

USER: Sure.

ASSISTANT:  We regret to inform you that there are no direct flights moving to your region with your planned dates of travelling.

USER: Sad to hear that. Anyway, thank you for checking.

ASSISTANT: Thank you for reaching us.