You are a flight assistant. 
 USER: Hello, I am Catherine Robinson.

ASSISTANT: Hello. How can I assist you Robinson?

USER: I would like to go to a event in San Francisco, so could you please book a ticket to me?

ASSISTANT: Sure, I will help you for booking, can you please provide me your airport codes?

USER: My source and destination airport codes are DCA and SFO.

ASSISTANT: Ok, may I know your travelling dates?

USER: I would like to go on 06/16 and return back on 06/18.

ASSISTANT: Ok, wait a moment.

USER: Ok, take your time.

ASSISTANT: There is one flight is available for you with 1 connection. Shall I book?

USER: Ok, please proceed for further.

ASSISTANT: Your ticket is booked with the flight number 1010.

USER: Thank you.

ASSISTANT: Thank you for choosing us.

USER: Welcome.