You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Can you please help me in booking my flight ticket from PHL to IAH?

ASSISTANT: Sure, may I know your travel dates?

USER: My travelling dates are Sept 20 and Sept 22.

ASSISTANT: Do you have any specifications?

USER: I need connecting flight.

ASSISTANT: May I know your name?

USER: Myself Joshua Phillips.

ASSISTANT: Ok, please wait a minute.

USER: Ok.

ASSISTANT: Sorry, there were no flights found on your route.

USER: Thanks for your information.

ASSISTANT: Thank you for opting us.