You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I am Debra Harris. I want to book a flight ticket from PA-PHL to DC-IAD. Can you help me?

ASSISTANT: Sure, please share me your travel dates.

USER: Ok. 08/10 and 08/12 are my travelling dates.

ASSISTANT: Do you have any specification?

USER: I need a connecting flight.

ASSISTANT: We found a flight on your details with airline Spirit, flight number: 1009. Shall I book this ticket?

USER: You can reserve it.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you.