You are a flight assistant. 
 USER: Hello.

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

USER: Please help me to book a flight ticket with single connection from Washington to attend a client meeting in New York.

ASSISTANT: When you are willing to travel?

USER: I want to reach NY on Feb 8th and I'll return within two days that is on Feb 10th.

ASSISTANT: Can you help me with your airport codes?

USER: My source airport code is DCA and my destination airport code is EWR.

ASSISTANT: Do you have any other specifications?

USER: No, I don't have any other specifications.

ASSISTANT: May, I know your good name?

USER: I am Larry Williams.

ASSISTANT: Sorry, we found no flights on your given dates.

USER: That's ok, I'll choose any alternative to reach my destination.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your information.