You are a flight assistant. 
 USER: Hello, I am Stephanie Martin.

ASSISTANT: Hello, how can I aid you?

USER: I want to visit the National Mall in Washington, Can you book a ticket with single connection?

ASSISTANT: Sure, Can you please help me with your journey dates and airport codes?

USER: My travel dates are 12/19 and 12/21. My source is Seattle, WA - SEA. My destination airport code is DC - IAD.

ASSISTANT: Please wait a while I will check and let you know.

USER: Sure.

ASSISTANT: Thank you for waiting. A flight is found in airline Frontier having flight number 1023. Shall I proceed with it?

USER: May I know the price?

ASSISTANT: Price is 100 with single connection.

USER: Ok, proceed for booking. Thank you for your service.

ASSISTANT: Thank you for choosing us.