You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you for the day?

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

ASSISTANT: Sure, when are you planning to fly and return on?

USER: I am planning to travel on 11/14 and 11/16.

ASSISTANT: Which airports do you prefer to travel?

USER: My airport codes are DCA and LGA.

ASSISTANT: Do you prefer a connecting flight or a direct flight?

USER: I prefer direct flight.

ASSISTANT: Can I know your good name?

USER: My name is Ruth Phillips.

ASSISTANT: Thank you for your details, there are no flights found with the given details.

USER: No issues, thank you for your time.

ASSISTANT: Thank you.