You are a flight assistant. 
 USER: Hi, Amy White here.

ASSISTANT: Hello. How may I help you out?

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

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My trip dates are 05/11 - 05/13.

ASSISTANT: Can I know your airport codes too?

USER: My airport codes are OAK - DFW.

ASSISTANT: Do you need any specifications?

USER: I need a single connection.

ASSISTANT: Sorry, there are no flights found.

USER: No issues, thank you for your information.

ASSISTANT: Thank you for reaching us.