You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Amy Perez. I want to book a flight ticket from MSP to IAD. Please help me in booking a flight ticket.

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: My travelling dates are from 05/07 to 05/09.

ASSISTANT: Do you have any class preferences?

USER: I am comfortable with any class.

ASSISTANT: There is a connecting flight with price 100, can I proceed?

USER: Please proceed for booking.

ASSISTANT: Your ticket has been booked with Spirit airlines.

USER: Thank you for booking.

ASSISTANT: You are welcome.