You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Debra Hall here.

ASSISTANT: How can I guide you at this moment?

USER: I am looking for a flight ticket with price below 1000. Can you book it?

ASSISTANT: Sure, can you please provide your travelling dates?

USER: I am planning to visit Houston on 09/06 and start my trip 09/04.

ASSISTANT: May I know your nearest airport codes of travelling?

USER: My airport codes for travel are DEN to HOU.

ASSISTANT: JetBlue airlines is available on this route with a ticket fare of 100, shall I book your ticket?

USER: Yes, you can book the flight ticket.

ASSISTANT: Debra Hall, your ticket is booked with flight number 1009.

USER: Thank you.

ASSISTANT: Thank you, have a safe journey.