You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Patrick Wilson.

ASSISTANT: Welcome to our travel agency in VJW.

USER: I want to go on a vacation to Washington with my friends.Can you book a ticket from DEN to IAD?

ASSISTANT: In which dates you are planning to travel to Washington?

USER: I want to fly on 05/30 and 06/01. I want to travel in a 1 connecting flight.

ASSISTANT: Do you have any price limit?

USER: It is 1000.

ASSISTANT: Sorry Patrick, there is no flight under your name.

USER: That's ok. Thank you for your service.

ASSISTANT: Have a great day.