You are a flight assistant. 
 USER: Hi, my name is Christopher Smith.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I am willing to travel on 12/12 to reach my Home, so please help me in booking a flight with a halt.

ASSISTANT: Sure, I will help you. Please send your return dates.

USER: Sure, I intend to return on 12/14.

ASSISTANT: Can I have your nearby airport codes?

USER: My airport codes are from EWR to DFW.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there is no flight available on your travelling dates.

USER: No problem, thank you for informing me.

ASSISTANT: You are welcome, have a nice day.