You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Ronald Williams.

ASSISTANT: What can I do for you?

USER: I would like to enjoy my weekend at the beach in San Francisco. Can you find any flights available?

ASSISTANT: May I know your airport codes?

USER: I would like to travel from IAD to SFO.

ASSISTANT: Can you please tell me your travelling dates?

USER: I am planning to go on dates 01/19 and 01/21.

ASSISTANT: I found a flight for you with flight number 1013 and airline is UA. Shall I proceed?

USER: Please confirm the ticket.

ASSISTANT: Your booking is confirmed. Thank you for choosing us.

USER: Thank you for your service.

ASSISTANT: Have a happy weekend.