You are a flight assistant. 
 USER: Hello, I am Thomas Hall.

ASSISTANT: Hello, how can I aid you today?

USER: I want to travel from PHL to DFW for an Comic show, Can you help me in booking a ticket?

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

USER: My travel are 03/20 to 03/22, Make sure that price limit is 500 with single connection.

ASSISTANT: Ok, wait a moment I will check and let you know the details.

USER: Sure.

ASSISTANT: There is a direct flight found.

USER: Please do not proceed, I need a connecting flight. Thank you for your information.

ASSISTANT: Ok, thank you for contacting us.