You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Sandra Young.

ASSISTANT: How may I help you?

USER: Can you help me in booking from DCA to DFW?

ASSISTANT: Please provide your trip dates.

USER: My travelling dates are 09/25 to 09/27.

ASSISTANT: There is a flight available for you with 1 connection. Shall I proceed?

USER: You can book it.

ASSISTANT: Your ticket is booked in 1009 flight.

USER: Thank you for helping.

ASSISTANT: Most welcome.