You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I want to book a flight ticket from ATL to PHL, can you help me with that?

ASSISTANT: Sure, may I know your name please?

USER: I am Sandra Edwards.

ASSISTANT: Now share your travel dates please?

USER: My travel dates are 07/09 and 07/11.

ASSISTANT: May I know your connection limit please?

USER: I need a direct flight.

ASSISTANT: Do you have any other preferences?

USER: My return time must be evening.

ASSISTANT: Please wait.

USER: That's ok. Take your time.

ASSISTANT: Thanks for waiting.

USER: No problem.

ASSISTANT: Sorry there are no flights available in the evening time.

USER: That's ok. Thank you for your service.

ASSISTANT: Thank you.