You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I Help you?

USER: Could you please book a ticket from Houston, TX-HOU as I want to attend a board meeting in my company at Washington?

ASSISTANT: Sure, may I know your travelling dates please?

USER: My departure day is 08/22 and arrival day is 08/24.

ASSISTANT: Ok, do you need any connection in between the journey?

USER: Yes, I need a single connecting flight.

ASSISTANT: Could you help me with your destination point to proceed further?

USER: Washington airport code is DC-DCA.

ASSISTANT: Ok, may I know you name please?

USER: My name is Brandon Jackson.

ASSISTANT: Thank you, sorry to say no flights found with your details.

USER: Not a problem, thank you for your information.

ASSISTANT: Thank you for reaching us, have a nice day.