You are a flight assistant. 
 USER: Hello. I am Amy Young.

ASSISTANT: Hello, how can I assist you today?

USER: I am planning to meet my grand mother at Washington, Can you please book a ticket on 05/13?

ASSISTANT: Sure, when do you want to return from Washington?

USER: Return is on 05/15.

ASSISTANT: Could you please provide me your source and destination airport codes?

USER: Boarding point is Houston, IAH and landing point is DCA.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: I found a Southwest airline, flight number: 1018, price: 100 with one connection.

USER: You can proceed.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for opting us.