You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I am Jessica Perez here, I want to reserve my ticket from BOS to JFK, can you please help me out?

ASSISTANT: Sure, please share your travelling dates.

USER: Sure, my planned dates of journey are from Apr, 18 to Apr, 20.

ASSISTANT: Do you need any connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: May I know your departure and arrival time?

USER: Yes, I need a depart time which is at afternoon.

ASSISTANT: Do you any class preference?

USER: Not required.

ASSISTANT: Sorry, there are no flights found with your requirements.

USER: Ok, no problem. Anyways, thank you for your service.

ASSISTANT: Thank you for opting us.