You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Mary Hall.

ASSISTANT: How can I assist you today?

USER: I have to attend a birthday party in Charlotte, can you please help me in booking a flight ticket from IAD to CLT?

ASSISTANT: Sure, can you please share your travel dates?

USER: Thank you. I am willing to travel on the dates of 05/04 and 05/06.

ASSISTANT: Let me check for the availability of flight.

USER: Ok, take your own time and provide me a flight which is having a price limit 200 or below.

ASSISTANT: Mary, there is a flight available with price 100 and the connection is 1 with Spirit airline. Would you like me to proceed with the booking?

USER: That's fine, please proceed with ticket booking.

ASSISTANT: Your booking is confirmed with 1013 flight number.

USER: Thank you for assisting me ticket booking.

ASSISTANT: You are welcome. Thank you for choosing our service.