You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Kimberly Mitchell here. I want to attend a seminar in Charlotte. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, kindly share your travel dates.

USER: My travelling dates are 11/18 and 11/20.

ASSISTANT: May I know your airport codes?

USER: My airport codes are IAH and CLT.

ASSISTANT: Do you have any connection limit?

USER: I need single connecting flight.

ASSISTANT: Is there any other specifications?

USER: I want to return on evening.

ASSISTANT: Ok, please wait a moment.

USER: Ok, I will wait.

ASSISTANT: Sorry to say, o flights found with your requirement.

USER: Anyway, thanks for the information.

ASSISTANT: Thanks for reaching us.