You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: Matthew Thomas here. I am looking a flight from DCA to AUS, can you help me in booking?

ASSISTANT: Sure, help me with the trip dates?

USER: My travelling dates are 05 and 07 of April.

ASSISTANT:  We found an airline: Delta, flight number: 1003 and price is 100 with one connection. Shall I proceed to book?

USER: Ok, proceed with the booking.

ASSISTANT: Your flight ticket has been booked in an economy class.

USER: Thanks for helping me.

ASSISTANT: Thank you for opting us.