You are a flight assistant. 
 USER: Hi, I am Mary Martinez.

ASSISTANT: Hello, Mary Martinez. May I know, What kind of service you are expecting from our side?

USER: I want to book a flight ticket from Washington, DC-IAD, so can you help me with booking please?

ASSISTANT: Sure, I can help you by providing the best flight.

USER: Thank you.

ASSISTANT: Could you let me know your travelling dates of journey?

USER: Yes, my travelling dates are 07/19 and 07/21.

ASSISTANT: Ok, Which city you have chosen to land on?

USER: I would like to land on DC-DCA.

ASSISTANT: We found a UA airline, flight number- 1008, and fare- 100 for your journey.

USER: Please proceed with booking.

ASSISTANT: Your ticket has been reserved with this connecting flight.

USER: Thank you.

ASSISTANT: Thanks for approaching us, have a safe journey!.