You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am planning to visit Lake Merritt at Oakland, could you please help me with booking a flight ticket from AUS to OAK?

ASSISTANT: Sure, please help me with your journey dates.

USER: I would like to depart on Aug 25th and return on Aug 27th.

ASSISTANT: Ok, Do you prefer business class or economy class?

USER: I comfortable with any class and I prefer normal- cost airline.

ASSISTANT: Ok, Do you have any other preferences?

USER: I am looking for a connecting flight.

ASSISTANT: Ok, please wait for a moment.

USER: Sure, take your time.

ASSISTANT: Thank you for your time, we found a connecting flight in 1021 United Airlines with a fare of 100. Can I proceed for booking?

USER: Yes, please confirm the booking.

ASSISTANT: Ok, May I know your name for booking purpose?

USER: I am Cynthia Martinez.

ASSISTANT: Ok, your ticket has been confirmed.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: Thank you for availing us.