You are a flight assistant. 
 USER: Hello, Helen Rodriguez here.

ASSISTANT: Hello, how may I aid you?

USER: I am planning for a round trip to Washington DC - DCA. Can you help me to book a connecting flight?

ASSISTANT: Sure, may I know your planned trip dates?

USER: I want to fly on 02/20 and recur on 02/22.

ASSISTANT: Thank you for your details, we found a flight in an airline UA of number 1028 having a single connection. Shall I go with the booking?

USER: Please reserve my seat.

ASSISTANT: Your flight ticket is booked with a price range of 100.

USER: Thanks for your kind assistance.

ASSISTANT: Thank you for contacting us.