You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Mark Perez here.

ASSISTANT: How may I help you?

USER: Can you please book a flight ticket from BOS to DCA?

ASSISTANT: Sure Mark, may I know your journey dates please?

USER: Sure, I need to travel on dates of 03/14 and 03/16.

ASSISTANT: Please give me a minute.

USER: Sure, take your time.

ASSISTANT: There is a flight with Southwest airlines available with price 100. Shall I book the ticket?

USER: That's great, please proceed with booking.

ASSISTANT: Your ticket is confirmed and the flight number is 1005.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.

USER: Most welcome.