You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. Can you please let me know how may I assist you?

USER: Can you please hold me a flight ticket from DEN to JFK?

ASSISTANT: Sure, I am happy to assist you. Can you please tell me your planned departure and arrival dates?

USER: My trip dates are 08/23 - 08/25.

ASSISTANT: Ok, please tell me your preferred number of connections in between your journey.

USER: I need a single connection.

ASSISTANT: Do you have any specific timings to depart and return?

USER: My depart time should be in the afternoon.

ASSISTANT: May I know your name?

USER: Jonathan Jackson here.

ASSISTANT: I am really sorry to inform you, there are no flights found which were departing in the afternoon time.

USER: Not a problem, thank you for your information.

ASSISTANT: Most welcome. Thank you for approaching us.