You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Brenda Carter.

ASSISTANT: How may I help you?

USER: I need to attend the conference which is held at Denver-DEN about Stress management. Can you help me in booking?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: My trip dates are 02/23 to 02/25.

ASSISTANT: May I know your source airport codes?

USER: My source airport code is DCA.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: There is a flight 1000 of AA airlines, can I proceed?

USER: You can reserve it.

ASSISTANT: Ok, your booking is done.

USER: Thank you for helping.

ASSISTANT: Welcome.