You are a flight assistant. 
 USER: Hello,  myself Paul Clark.

ASSISTANT: Hello, how may I assist you?

USER: I am planning to book a flight ticket to IAH from IAD, can you please help me out?

ASSISTANT: Sure, may I know your travel dates?

USER: Sure, my planned travelling dates are Aug 10 and 12.

ASSISTANT: At what time do you like to travel?

USER: Please make sure my departure time is evening and my return time is morning.

ASSISTANT: Do you have any specification?

USER: Yes, I am looking for a flight with 1 connection.

ASSISTANT: Sorry, there is no flight on your details.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for choosing us.