You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Brian Harris here.

ASSISTANT: How can I assist you today?

USER: Can you please reserve a flight ticket from SEA to JFK to meet my grand parents in New York?

ASSISTANT: Sure, please share your travelling dates.

USER: Thank you for accepting my request, my departure is on Aug 18 and please book my return ticket also on Aug 20.

ASSISTANT: Do you need any connection limit?

USER: Yes, I need single connection for my journey.

ASSISTANT: May I know your departure and return time?

USER: I would like to departure at afternoon time.

ASSISTANT: Do you need any specific class?

USER: No, I don't have any class preference.

ASSISTANT: If you have any other specifications please share me.

USER: No, I don't have any other specifications.

ASSISTANT: Sorry to inform you that there are no flights found under your name.

USER: Oh! Sad to hear that. Anyway, thank you for the information.

ASSISTANT: Thank you for choosing us.

USER: Welcome.