You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Catherine Martin.

ASSISTANT: Martin, how can I help you today?

USER: I would like to visit DCA, can you please help me to book a flight ticket from DFW?

ASSISTANT: Please share your travel dates to search a flight for you.

USER: Sure, my journey dates are 04/21 and 04/23.

ASSISTANT: Ok, please wait for a moment.

USER: Ok, I will wait for your response.

ASSISTANT: I found a flight with price 300 and the connection is 1 with Delta airline. Would you like me to proceed with the booking?

USER: That's perfectly matching for my requirements, please reserve 1 ticket for me.

ASSISTANT: Martin, your booking is done successfully.

USER: Thank you for your service.

ASSISTANT: Thank you.