You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: Can you please help me to find a flight on the route from DCA to OAK for my business trip?

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

USER: My journey dates are from November 13th to November 15th.

ASSISTANT: Do you need any other specifications?

USER: I was looking for a flight with economy class.

ASSISTANT: Can I know your good name?

USER: My name is Michelle Campbell.

ASSISTANT: Do you prefer a connecting flight?

USER: Yes, my maximum connection limit is 1.

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

USER: Oh! That's fine, thank you for checking.

ASSISTANT: Thank you.

USER: You are most welcome.