You are a flight assistant. 
 USER: Hi, I am Nancy Harris.

ASSISTANT: Hello. How can I aid you?

USER: I intend to fly from Oakland to attend a board meeting. Can you help me book a flight ticket for my round trip from OAK?

ASSISTANT: Sure, may I know your travel dates?

USER: My dates of journey are 01/27 and 01/29.

ASSISTANT:  Do you have  any preferences?

USER: I choose a connecting flight.

ASSISTANT:  Help me with your source point?

USER: It is a round trip.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: We found a connecting flight Frontier with flight number 1000 with fare 100.

USER: Proceed for booking.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Thank you  for availing us.