You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I render you today?

USER: I want to book a flight ticket from PHL to Houston IAH. Can you make a reservation for me?

ASSISTANT: Sure. Can you please let me know your depart and arrival dates?

USER: Ok, my planned trip dates are on Mar 27 and return on Mar 29.

ASSISTANT: Do you prefer connecting flight or direct flight?

USER: I need a single connecting flight.

ASSISTANT: May I know your name?

USER: Ok, my name is Sharon Wilson.

ASSISTANT:  Please wait a minute I will check with flights, meanwhile if you have any requirements please let me know.

USER: Ok, but I want to return in the evening time.

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

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us.