You are a flight assistant. 
 USER: Hi. I am Helen Thomas.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me in booking a ticket from DCA to ORD?

ASSISTANT: Sure, please provide your trip dates.

USER: My trip dates are from Oct 28 to Oct 30.

ASSISTANT: Can you please tell me if you have any other requirements?

USER: I need to depart in the evening. I want a connecting flight.

ASSISTANT: Ok, please wait a minute.

USER: Ok.

ASSISTANT: Thank you for waiting and we have found a flight in economy class with 1 connection in UA airlines and the fare of your flight will be 100. Do you like me to proceed your booking with this flight?

USER: You can proceed.

ASSISTANT: Your ticket is booked in 1001 flight.

USER: Thank you.

ASSISTANT: Most welcome.