You are a flight assistant. 
 USER: Hello,. I am Robert Thomas.

ASSISTANT: Hello, how can I be your helping hand today?

USER: I am planning to visit the Ferry Market building place to do shopping for my Friend's marriage in San Francisco, CA - SFO. Can you help me to book a connecting flight?

ASSISTANT: Sure, we are here to help you for booking.

USER: Thank you.

ASSISTANT: Let me know, when do you want to depart and arrival?

USER: I want to depart on 12/14 and my arrival is on 12/16.

ASSISTANT: Ok, may I know your source point?

USER: It is a round trip.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: We are glad to inform you that, we found a flight in 1019 with a fare of 100. Can I proceed?

USER: Please reserve my seat.

ASSISTANT: Sure, you ticket has been confirmed in Spirit airline.

USER: Thanks for your response.

ASSISTANT: Thank you for availing us.