You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I am Katherine Martin. I want to celebrate flowers festival in Houston, so please help me in booking a connecting flight.

ASSISTANT: Sure, I am here to help you, may I know your travelling dates?

USER: I want to fly on 04/07 and return on 04/09.

ASSISTANT: Could you please help me with your airport codes?

USER: My source is Washington DC - IAD and destination code is TX - HOU.

ASSISTANT: Please mention your price limit.

USER: I can afford up to 500.

ASSISTANT: We found a flight with fare of 200 which matches your travelling dates. Shall I proceed with booking?

USER: You can proceed to booking.

ASSISTANT: Your booking has been confirmed on name of Katherine Martin in Delta 1018 airline.

USER: Thank you for your good service.

ASSISTANT: Thank you for approaching us.