You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Thomas Anderson, I would like to visit National Gallery of Art in Washington DC. Can you please book a flight ticket?

ASSISTANT: Sure, could you please provide your travelling dates and airport codes?

USER: Airport codes are HOU and IAD on dates of 05/15 and 05/17.

ASSISTANT: There is a flight available with price 100 and flight number is 1007, would you like to proceed?

USER: Ok, please confirm.

ASSISTANT: Your booking is confirmed.

USER: Thank you for your help.

ASSISTANT: You are welcome. Have a safe journey.