You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you today?

USER: I am Pamela Garcia. I want to book a direct flight ticket to attend an emergency case.Can you help me?

ASSISTANT: Sure, can I know your preferable dates?

USER: 06/27 and 06/29 are my travelling dates.

ASSISTANT: I need to know your travelling airport codes?

USER: DTW and DFW are my airport codes.

ASSISTANT: Just give a moment.

USER: Ok.

ASSISTANT: Sorry to say this, no flights are available with o connecting limit.

USER: No issue. Thank you.

ASSISTANT: Thank you for reaching us.