You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I assist you?

USER: I am Debra Lopez. I want to attend my sister marriage in Seattle, so please help me for booking a flight ticket.

ASSISTANT: Sure, I am here for that. Could you please send me your details?

USER: My source and destination airport codes are DC-IAD, WA-SEA.

ASSISTANT: OK, May I know your journey dates please?

USER: My departure day is 11/02, return day is 11/04.

ASSISTANT: OK, Could you please wait for a minute?

USER: OK sure.

ASSISTANT: I will check the availability and come back to you. I have found a flight for you,  which matches all your requirements.

USER: Can you please provide me the flight details?

ASSISTANT: Sure. The details are: Spirit airlines, flight number-1007, having price of 100. Shall I proceed for the reservation?

USER: Yes please.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us. Have a Great day.