You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Catherine Parker.

ASSISTANT: How can I help you today?

USER: I am looking to book a flight ticket from DCA to LAS to meet my friend. Can you please help me for booking a flight ticket?

ASSISTANT: Sure, I am here to help you in booking. Could you please share your travel dates?

USER: My travelling dates are 05/19 and 05/21.

ASSISTANT: Please hold on for a while.

USER: Sure, I will wait for your response.

ASSISTANT: Here, I found a flight for you with 1 connection and it costs you 100. Can I book it?

USER: Ok, please proceed for booking.

ASSISTANT: Your booking is done with flight 1011 in UA airlines.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us, have a safe flight.

USER: Welcome.