You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Donald Lopez here.

ASSISTANT: How can I assist you today?

USER: My planning for a trip is from DCA to MSP, can you please help me to book a ticket?

ASSISTANT: Sure, will you provide your travelling dates please?

USER: Ok, my dates of journey is from 09/15 to 09/17.

ASSISTANT: Please give me a moment.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting, there is a flight with price 200 and the connections 1 is available.

USER: Ok, please proceed with this ticket booking.

ASSISTANT: Your ticket is booked. The flight number is 1000 and the airline is Frontier.

USER: Thank you for your help.

ASSISTANT: Welcome, have a great day.