You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you?

USER: I would like to meet my wife on her birthday, please help me to book my flight ticket from ORD to DCA.

ASSISTANT: Sure, on which dates would you like to travel?

USER: I would like to depart on Mar 17th and return back on Mar 19th.

ASSISTANT: Is there any connection limit?

USER: I would like to prefer for a connecting flight.

ASSISTANT: Do you have any other requirements?

USER: I would like to depart in the morning.

ASSISTANT: May I know your name to proceed further?

USER: My name is Paul Martinez.

ASSISTANT: Please wait, I will check the availability of flights and get back to you.

USER: Sure.

ASSISTANT: Sorry, there were no flights found to depart in the morning.

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

ASSISTANT: Thank you for approaching us.