You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to book a flight ticket to visit National Gallery of Arts with my friends, can you help me with booking?

ASSISTANT: Sure, may I know your source and destination airport codes?

USER: My airport codes are LAS to DCA.

ASSISTANT: Let me know your travelling dates.

USER: My travelling dates are May 02 and May 04.

ASSISTANT: May I know your connection limit?

USER: I need a break in between my journey.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: May I know your name please?

USER: I am Timothy Brown.

ASSISTANT: We found a Frontier airline, flight number: 1004, price: 100 with one connection.

USER: Please proceed.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for choosing us.