You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: Can you please help me to book a flight ticket from ATL to SFO?

ASSISTANT: Sure, may I know on which dates would you prefer to travel?

USER: My travelling dates are Nov 28 to Nov 30.

ASSISTANT: How many connections are required?

USER: I need a single connection of flight.

ASSISTANT: Is there any class preference?

USER: I would like to prefer economy class.

ASSISTANT: Do you need a normal cost airline or low cost airline?

USER: I am comfortable with any airline.

ASSISTANT: Do you have any time restriction?

USER: No.

ASSISTANT: On what name you want me to make the reservation?

USER: Samantha Carter.

ASSISTANT: Ok, there is a Frontier airline with flight number 1000 going on your route with 1 connection and the tariff is 100. Is that fine?

USER: Ok, please proceed to book.

ASSISTANT: Your booking has been processed successfully.

USER: Thank you.

ASSISTANT: Thank you for reaching us.