You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Jonathan Clark. I would like to book a ticket from HOU to IAD, can you please help me out?

ASSISTANT: Ok, may I know your travelling dates?

USER: I am travelling on these dates Jan 20th and 22nd.

ASSISTANT: Can you please mention your journey timings?

USER: I prefer return time in the afternoon.

ASSISTANT: Do you need connecting flight?

USER: I need a single connected flight.

ASSISTANT: Sorry, no flights found on your route.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for reaching us.