You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you help me in reservation of flight ticket? Jerry Brown here.

ASSISTANT: Sure, please tell your travelling locations.

USER: I want to buy a precious thing which is available only in reading terminal market, this market is in Philadelphia, PA - PHL.Can you book the flight ticket for me from TX - DFW?\.

ASSISTANT: Can you please tell your travelling dates?

USER: I want to shop on 04/20, so my travelling dates will be from 04/19 till 04/21.

ASSISTANT: I'm sorry, there are no flights regarding your travelling dates.

USER: That's ok, no issues.

ASSISTANT: Thank you and have a nice day.

USER: I will prefer road way.