You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: Could you please book a flight ticket from IAD to ATL?

ASSISTANT: Sure, may I know your travel dates?

USER: My travel dates are Nov 20 and Nov 22.

ASSISTANT: Please share me your name.

USER: My name is Justin Thomas.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight. And I want to depart in the morning.

ASSISTANT: Flight-1023 is available with Southwest airlines having single connection and the ticket costs you 100 only in economy class. Are you comfortable with this flight?

USER: Ok, proceed.

ASSISTANT: Your ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you.