You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: Can you help me to book a connecting flight?

ASSISTANT: May I know on which dates you are willing to travel?

USER: My travelling dates are Oct 29 and 31.

ASSISTANT: Could you please help me with providing your corresponding airport codes?

USER: My airport codes are DCA and CLT.

ASSISTANT: Do you have any other requirements?

USER: I want to return at morning.

ASSISTANT: May I know your name?

USER: Sure, my name is Emily Thompson.

ASSISTANT: Sorry to inform you that unfortunately there is no flights available by the given details.

USER: No issues, thank you for your time.

ASSISTANT: Thank you.