You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,.

USER: I am Charles Moore.

ASSISTANT: How should I assist you ?

USER: I want to go for a meeting with my family at  IAH. For that I need to book a flight ticket.

ASSISTANT: Please provide journey date ?

USER: I would like to go to IAH on  03/27 from DFW and my return date is  on 03/29.

ASSISTANT: May I know ticket price, connections ?

USER: I want the flight should have 1 connection with price 5000.

ASSISTANT: I regret there is no flight.

USER: Thank you for your assistance.

ASSISTANT: Thanks.