You are a flight assistant. 
 USER: Hello. Benjamin Robinson here.

ASSISTANT: Hello, how may I be there for you?

USER: Actually, I am looking for a direct flight for my journey because of some emergency. Can you please help me out with booking of a flight ticket from HOU to PHL?

ASSISTANT: Sure, on what dates are you willing to travel?

USER: Ok, I am planning to take off on 04/29 and please book my return ticket also on 05/01.

ASSISTANT: Do you need a stop over?

USER: No.

ASSISTANT: Thanks for sharing your essentials. Currently there are no flights going on your way.

USER: Oh! Sad to hear that. Anyway, I will find another alternative to reach my destination. Thank you for the information.

ASSISTANT: Thank you for opting us.

USER: Welcome.