You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: My name is Mark Edwards. I would like to book a ticket from DCA to IAD.

ASSISTANT: Sure, please provide me your journey dates.

USER: The travel dates are from 11/05 to 11/07.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: Mark, there is a flight with Spirit airlines available with price 100. Shall I book the ticket?

USER: You can proceed with that.

ASSISTANT: Your ticket is confirmed and the flight number is 1002.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.