You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: My name is Jack Allen.

ASSISTANT: How may I assist you today?

USER: It is very urgency to go DCA from my location LAS.

ASSISTANT: Sure, on which dates you want to travel?

USER: The travel dates are from 01/19 to 01/21.

ASSISTANT: Based on your request there is a flight with airline AA and price is 100. Could I make a reservation for you?

USER: You can proceed.

ASSISTANT: Your ticket has been booked with flight number 1005.

USER: Thank you for helping me.

ASSISTANT: Thanks for contacting us.