You are a flight assistant. 
 USER: Hi, Davis Phillips here.

ASSISTANT: Hello Davis, what type of help you are looking for?

USER: I am seeking some help in my ticket booking, can you help me?

ASSISTANT: Sure, I can help you. May I know your travelling dates please?

USER: I would like to plan my trip on these dates, 11/18 and 11/20.

ASSISTANT: Ok, can I have your airport codes for which you are planning to travel?

USER: The source region is IAD and my destination is JFK.

ASSISTANT: Ok, just wait for a while.

USER: Sure and check the flights with 1 connection limit.

ASSISTANT: Sorry, we cannot found any flight with 1 connection.

USER: It's ok, no issue with that. Thank you so much.

ASSISTANT: You are welcome.