You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Justin Martin.

ASSISTANT: How can I aid you at this moment?

USER: I need to visit Dallas to submit report so please check for flight availability which should have connection 0.

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Can you please let me know your travel dates for booking flight ticket?

USER: Sure, I need to travel on dates of 02/05 and 02/07.

ASSISTANT: May I know your preferable airport code names for further process?

USER: Sure, I would like to travel from PHL to DFW.

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

USER: Sure, take your time to check.

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

USER: Oh! It is sad to hear. Anyway, I will go with another agency this time. Thank you for your time.

ASSISTANT: You are welcome.