You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, do you need any help from us?

USER: Can you please help me to book a ticket from MSP to IAD?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: My journey dates are from Dec 10 to Dec 12.

ASSISTANT: Ok, could I have your name please?

USER: Myself David Brown.

ASSISTANT: Ok, do you need direct or connecting flight?

USER: I need a connecting flight. I don't have any other requirements.

ASSISTANT: Ok, please wait.

USER: I will be waiting for your response.

ASSISTANT: The economy class with flight number 1020 of Spirit airline is available having fare as 100 and connection as 1, is it ok for you?

USER: Please book it.

ASSISTANT: Ok, your reservation is confirmed.

USER: Thank you for assisting me with booking.

ASSISTANT: Thank you for choosing us.

USER: Most welcome.