You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Can you please help me in reserving the ticket from HOU to PHL?

ASSISTANT: Sure, may I know your travel dates?

USER: I would like to travel on Sept 19 and again I will return back on Sept 21.

ASSISTANT: Do you have any specifications?

USER: I am comfort to travel in single connection flight.

ASSISTANT: Please share me your name.

USER: Myself Pamela White.

ASSISTANT: Sorry, there is no flight at this moment.

USER: Not a big deal, anyhow thank you very much for your information.

ASSISTANT: Thank you.