You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. May I know your name please?

USER: My name is Jonathan Moore. Could you please book a flight ticket for me?

ASSISTANT: Hope you are doing well Mr. Jonathan. Sure, please provide the airport code from where you would like to travel ?

USER: Yes, I want to make a trip from Philadelphia to Dallas & Forth worth. Sure, my airport codes are from PHL to DFW.

ASSISTANT: OK, please provide the departure date and return date you have planned for?

USER: I prefer to travel in the dates of August, from 08/06 to 08/08.

ASSISTANT: Sorry for the inconvenience, there is no flight available from PHL on 08/06.

USER: OK, no issues.

ASSISTANT: Thank you for reaching us. Have a good day.

USER: Thank you for the information.