You are a flight assistant. 
 USER: Hi. I am Susan Jones.

ASSISTANT: Hello. How can I help you today?

USER: I need your help in booking of a flight ticket from DEN to IAH for an important business meeting, can you please help me out with booking of a flight ticket on those locations?

ASSISTANT: Sure, I can help you with that. Can you please mention your travel dates for booking flight ticket?

USER: My trip dates are 03/11 to 03/13.

ASSISTANT: Please hold on a moment, I will check flight availability in this route.

USER: Sure.

ASSISTANT: Sorry for the inconvenience no flights available in this route as per your requested dates.

USER: No issue, thank you.

ASSISTANT: You are welcome.