You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Can you please help me in booking the flight ticket from HOU to MSP?

ASSISTANT: Do you like to go with a economy class or business class?

USER: I prefer to travel in economy class.

ASSISTANT: Sure, can you please specify me your dates of travel?

USER: My travel dates are Dec 26 and Dec 28.

ASSISTANT: Any other specifications to be met?

USER: My depart time should be in the morning.

ASSISTANT: Can I know your name for booking your flight ticket?

USER: Lisa Lewis.

ASSISTANT: I got a connecting flight-1028 in economy class, shall I proceed?

USER: Please proceed.

ASSISTANT: Ok, booking is done on Spirit airlines.

USER: Thank you for the help.

ASSISTANT: Thanks for choosing us.