You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Michelle Green from Washington.

ASSISTANT: How may I assist you today?

USER: Assist me in booking a ticket, to reach Dallas within the price limit 500. Can you check whether the flight is available or not?

ASSISTANT: Sure, we are glad to assist you in booking.

USER: Thank you.

ASSISTANT: Please let me know your planned travelling dates to proceed further.

USER: I am planning to leave my location on 05/13, and return will be on 05/15.

ASSISTANT: Can I know your connection preference?

USER: I choose a connecting flight for my journey.

ASSISTANT: Kindly share your source and destination points.

USER: Source is from Washington International airport, IAD. Destination is at Dallas, DFW.

ASSISTANT: Thank you for sharing your journey derails. Are you comfortable with the economy class ticket?

USER: Yes, I am comfortable with that.

ASSISTANT: Your booking has been confirmed with the Spirit airline and the flight number-1002 with the single connection. The fare of the ticket is 100.

USER: Ok, proceed for booking.

ASSISTANT: Your seat has been reserved with this.

USER: Thanks for your assistance.

ASSISTANT: Thank you for choosing us.