You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am Elizabeth Wright. Can you please help me in booking my flight ticket from HOU to PHL?

ASSISTANT: Sure, can I know the travel dates please?

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

ASSISTANT: Could you please provide the departure and return time?

USER: I need my return ticket at morning time.

ASSISTANT: Do you have any requirements?

USER: I need connecting flight.

ASSISTANT: Sorry, there are no flights available as per your request.

USER: Ok, thank you for checking.

ASSISTANT: Thank you for approaching us.