You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am planning to celebrate my grandmother and grandfather wedding anniversary at Washington DCA, can you hold me a connecting flight?

ASSISTANT: Sure, may I know your travel dates?

USER: My trip dates are 07/19 and 07/21.

ASSISTANT: Kindly share your source code?

USER: My boarding point is PHX.

ASSISTANT: Do you have any specifications?

USER: Yes, I can pay up to 200 only.

ASSISTANT: May I know your name.

USER: I am Dorothy Edwards.

ASSISTANT: We have found a Southwest airline of 1022 flight number with one connection of cost 100.

USER: Please reserve it.

ASSISTANT: Yes, you can. Your booking has been processed.

USER: Thank you.

ASSISTANT: Thank you.