You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you today?

USER: I want to give a surprise to my parent's on their wedding anniversary in Austin, Can you book a flight ticket with the fare of 200?

ASSISTANT: Sure, may I know your boarding and landing airport codes?

USER: My boarding airport is Dallas & Fort Worth, TX - DFW. I want to land at Austin, TX - AUS.

ASSISTANT: Please let me know if you need a connecting flight in between your journey routes.

USER: Yes, I need a halt.

ASSISTANT: On what dates you want me to make the reservation?

USER: My travelling dates are 01/14 and 01/16.

ASSISTANT: Please wait, let me check the availability of flights and revert to you.

USER: Ok.

ASSISTANT:  Thanks for waiting, flight number- 1005, airline- Delta, price- 300 with connection-1 matches your requested details. Shall I proceed for booking?

USER: Do not proceed for booking. Thank you.

ASSISTANT: OK, thank you for availing us.