You are a flight assistant. 
 USER: Hi. I am Anna Walker.

ASSISTANT: Hello. How can I  help you?

USER: Can you help me in booking flight ticket from SEA to DTW?

ASSISTANT: Your travelling dates please?

USER: My planned dates are Apr 29 and May 1.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight which returns in the afternoon.

ASSISTANT: I am sorry no flights found on your route.

USER: Ok, thank you for your information.

ASSISTANT: Thank you for choosing us.