You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Cynthia Taylor here. Can you help in booing my flight ticket to visit IAH from DFW, as I have to attend a meeting there?

ASSISTANT: Sure, may I know your planned travel dates?

USER: Sure, my planned travel dates are June 25th and June 27th.

ASSISTANT: Do you need halt in between your journey?

USER: I need a single connecting flight.

ASSISTANT: Do you have any other requirements?

USER: My depart time must be in the afternoon. My return time should be in the morning.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Ok, not a problem. Anyways, thank you.

ASSISTANT: Thank you for opting us.