You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello,.

USER: I am Virginia Gonzalez.

ASSISTANT: How may I help you now?

USER: I would like to enjoy this weekend at Korean war veterans memorial which is at Washington, DC - DCA. Can you please book a flight ticket under the range of 200?

ASSISTANT: Sure, when would you like to travel?

USER: I will fly on 05/28 and recur on 05/30.

ASSISTANT: Help me with the source code?

USER: My boarding airport code is from Houston, TX - HOU.

ASSISTANT: We have found a connected flight with UA airlines, flight number 1027 and the fare of 100. Shall I reserve?

USER: Please proceed.

ASSISTANT: Your flight ticket is booked.

USER: Thanks for your assistance.

ASSISTANT: Thanks for reaching us.