You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

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

ASSISTANT: Sure, I am here to help you. Can you please share your travel dates?

USER: My travelling dates are Oct 26 and Oct 28.

ASSISTANT: May I know your connection limit?

USER: I need single connection flight.

ASSISTANT: May I know your departure and arrival time?

USER: I prefer my return flight at evening time.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Ok, please share your name.

USER: Myself Raymond Williams.

ASSISTANT: Sorry, there are no flights in this route as per your travelling dates.

USER: Ok, thanks for checking.

ASSISTANT: Thank you for reaching us.