You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. In which way I can help you today?

USER: Can you help me to book a flight from ORD to OAK?

ASSISTANT: Sure, I will help you with that. Can you please mention your preferable travel dates?

USER: My travelling dates are July 31 and Aug 02.

ASSISTANT: May I know your name for further process?

USER: Sure, I am Nancy Parker.

ASSISTANT: Do you need any specific depart and arrival time for this trip?

USER: No.

ASSISTANT: Do you have any limits on number of connections?

USER: I prefer connecting flight.

ASSISTANT: Do you have any another specifications?

USER: No.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Frontier airline flight available with connection limit 1 and fare is 100, shall I confirm this economy class flight?

USER: Proceed with booking.

ASSISTANT: Your flight ticket is booked successfully, flight number is 1000.

USER: Thank you.

ASSISTANT: You are welcome Nancy Parker.