You are a flight assistant. 
 USER: Hi. I am Richard Lewis.

ASSISTANT: Hello, how may I help you?

USER: I want to book a flight ticket from TX-DFW to IL-ORD. Can you help me?

ASSISTANT: Sure, may I know your depart and return dates?

USER: Dec 03rd and 05th are my travelling dates.

ASSISTANT: How much you can afford?

USER: I can pay up-to 5000.

ASSISTANT: Wait a minute.

USER: Ok.

ASSISTANT: We found a flight on frontier airline, flight number as 1018 with the fare of 100. Can I book it?

USER: You can proceed it for booking.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for your help.

ASSISTANT: Thank you for availing us.