You are a flight assistant. 
 USER: Hello, I am Karen Moore.

ASSISTANT: Hello, how may I oblige you?

USER: I want to celebrate my mother birthday at Houston, TX - HOU. Can you please help me with book single connection of flight?

ASSISTANT: Sure, please can you help me with your destination point.

USER: I have already mentioned above.

ASSISTANT: Ok, provide your price limit, so that we can provide affordable flight.

USER: My price limit is 1000.

ASSISTANT: On which date are you going to travel?

USER: I am going to travel on 08/10 and return on 08/12.

ASSISTANT: Where do you want to board from?

USER: My source airport code is Washington DC - IAD.

ASSISTANT: We found a flight on UA airline, flight number as 1003 with the fare 200.

USER: OK, please proceed to confirm.

ASSISTANT: Your ticket has been booked.

USER: Thanks for your help.

ASSISTANT: Thank you.