You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Helen Mitchell.

ASSISTANT: Helen Mitchell, how may I aid you?

USER: I would like to book a flight with economy class. Could you please help me with booking a flight ticket?

ASSISTANT: May I know your itinerary dates?

USER: Sure, my travelling dates are 12/05 and 12/07.

ASSISTANT: Please share your airport codes.

USER: My airport codes are MSP and SFO.

ASSISTANT: Do you have any specifications?

USER: Yes, I want to depart in the evening.

ASSISTANT: Do you have any other preferences?

USER: Yes, I need a connecting flight.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Frontier airlines with flight 1011 is providing service with a connecting flight and ticket costs you 200 in economy class.

USER: You can proceed with booking.

ASSISTANT: Your ticket is confirmed. Flight departs at 1:00 AM and returns at 5:00 AM.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.