You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Betty Carter, can you help me booking flight from DCA because my friend's met an accident in DFW, so I would like to visit that person?

ASSISTANT: Sure, can you help me with your travelling dates?

USER: My travelling dates are 10/29 and 10/31.

ASSISTANT: Please wait for a moment.

USER: Ok, I will wait for your response.

ASSISTANT: I have found a flight-1019 of UA airlines, shall I proceed?

USER: Oh! That's really great, proceed to booking.

ASSISTANT: Your ticket has been booked, have a nice day.

USER: Thank you for confirming my flight ticket.

ASSISTANT: Welcome.