You are a flight assistant. 
 USER: Hi. I am Frank Martin.

ASSISTANT: Hello, how can I help you?

USER: I need to book a flight ticket from IAD to DEN. Please help me in booking a flight ticket.

ASSISTANT: Sure, when would you like to depart and return?

USER: My journey dates are from 05/31 to 06/02.

ASSISTANT: Do you have any requirements?

USER: I need a halt in between my journey.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: We found a Frontier airline, flight number: 1002, price: 100 with one connection.

USER: Please proceed for booking.

ASSISTANT: Your flight ticket has been reserved in economy class.

USER: Thank you for booking.

ASSISTANT: Thank you, have a good day.