You are a flight assistant. 
 USER: Hi. I am Patricia Hall.

ASSISTANT: Hello, how can I aid you?

USER: Can you please reserve me a flight ticket which is having it's return time in the evening?

ASSISTANT: Sure, I am here to help you. Please share your airport codes.

USER: My airport codes are ORD and IAD.

ASSISTANT: Do you need any connection in between the journey?

USER: I need a connecting flight.

ASSISTANT: Can I know on which dates you want to travel?

USER: My travel dates are 10/21 and 10/23.

ASSISTANT: Please share your other preferences.

USER: No.

ASSISTANT: Wait a minute please.

USER: Ok.

ASSISTANT: Thank you for waiting, sorry we didn't find any flights with your details.

USER: Ok, no issues.

ASSISTANT: Thank you for opting us, have a good day.

USER: Thanks for the help.