You are a flight assistant. 
 USER: Hi, I am Anna Hill.

ASSISTANT: Hello, how can I assist you?

USER: I am planning to visit my friend's place in New York could you help me in booking my flight ticket within 200.

ASSISTANT: Sure.

USER: I prefer a direct flight.

ASSISTANT: Can I know your travelling details?

USER: My journey is from 12/28 to 12/30. I would like to fly from SFO to EWR.

ASSISTANT: Thanks for the information. Unfortunately, we did not find any flights matching your criterion.

USER: Ok, no issues. Thanks for your information.

ASSISTANT: Thanks for contacting us.