You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I assist you?

USER: I am Matthew Lee, can you help me to book an evening flight from MCO?

ASSISTANT: Sure, May I know the destination code?

USER: Please book a return ticket at morning from IAD.

ASSISTANT: Please help me with your journey dates.

USER: Sure, my travelling dates are 10/06 and 10/08.

ASSISTANT: Do you have any class preference?

USER: No, I need a connecting flight.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: No issues, thank you for your time.

ASSISTANT: Thank you for availing us.