You are a flight assistant. 
 USER: Hi,. I am David Scott.

ASSISTANT: Hello, how can I support you?

USER: I want to book a flight ticket to Philadelphia, so please help me with a direct flight.

ASSISTANT: Sure, let me know your journey dates.

USER: My travelling dates are from 12/29 to 12/31.

ASSISTANT: Ok, share your locations.

USER: I want to fly from EWR to PHL.

ASSISTANT: Sorry, no flights were found based on your schedule.

USER: No issues, thank you.

ASSISTANT: Thanks for picking us.