You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

USER: I would like to book a flight ticket from SFO to IAH to meet my friends.

ASSISTANT: Sure, on what dates are you planning to travel?

USER: My travelling dates are June 18 and June 20.

ASSISTANT: How many connections do you need?

USER: I need a break in between the journey.

ASSISTANT: Is there any other requirements?

USER: Yes, I need a economy class.

ASSISTANT: May I know your name?

USER: I am Mary Clark.

ASSISTANT: Ok, there is a flight 1015 of Frontier airlines is going on your way and the fare is 200. Is that fine?

USER: You can proceed with booking.

ASSISTANT: Your booking has been done in economy class.

USER: Thank you for your assistance.

ASSISTANT: Thank you for choosing us.