You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a flight ticket from IAD to meet my grand parents in OAK, can you help me in booking?

ASSISTANT: Sure, let me know your planned journey dates?

USER: I need to depart on Sept 11th and my return date will be on Sept 13th.

ASSISTANT: Do you prefer direct flight or connecting flight?

USER: Yes, I need a connecting flight in between my journey.

ASSISTANT: Is there any other preferences?

USER: No.

ASSISTANT: May I know your name?

USER: I am Catherine Perez.

ASSISTANT: We found a connecting flight 1006 in Frontier airline with price 200 and class is economy. Shall I proceed?

USER: That's fine, you can book the ticket.

ASSISTANT: Your booking has been confirmed.

USER: Thank your or your assistance in booking.

ASSISTANT: Thank you for availing us.