You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What assistance do you require from our agency?

USER: I would like to book a ticket from IAH to HOU, can you please help me out?

ASSISTANT: Yes, I am gleeful to help you with that. Can you please provide me your journey dates?

USER: I am travelling on these dates Oct 21st and 23rd.

ASSISTANT: Ok, may I know your name to proceed further?

USER: Edward Parker here.

ASSISTANT: Which flight do you prefer either a direct flight or a connecting flight?

USER: I need single connected flight.

ASSISTANT: Ok, please give me a minute. In the meanwhile, tell me your other preferences?

USER: I prefer departure in the morning.

ASSISTANT: Sorry to inform you, there are no flights found which is departing in the morning time on the dates you have mentioned.

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

ASSISTANT: You are most welcome. Thank you for choosing us.