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

ASSISTANT: Hello. How can I help you?

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

ASSISTANT: Sure, I am here to help you. Can you please share your planned journey dates?

USER: My trip dates are 05/19 - 05/21.

ASSISTANT: May I know your take off and landing airport codes?

USER: My airport codes are DFW - ORD.

ASSISTANT: Let me know your connection limit.

USER: I need a single connection.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Thank you for sharing the details, wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, there were no flights available that matches your requirements.

USER: No issues, thank you for your information.

ASSISTANT: Thank you for approaching us.