You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Can you please help me to book a flight from JFK to DCA?

ASSISTANT: Sure, please share me your preferable dates to travel.

USER: My travel dates are May 13th and 15th.

ASSISTANT: Ok, do you have any connection preference?

USER: Due to my busy work schedule I prefer to fly with direct flight.

ASSISTANT: Please let me know if you have any specific time preference.

USER: Yes, please make sure my depart time should be in the afternoon.

ASSISTANT: Ok, please a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry to inform you that there is no flight available on your route.

USER: No worries, I will find an alternative to travel. Thank you.

ASSISTANT: Can I have your name please?

USER: My name is Jessica Jones.

ASSISTANT: Thank you for reaching us.