You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is James Baker.

ASSISTANT: How can I assist you?

USER: I would like to visit New York. Can you help me for booking a flight ticket from DCA to EWR?

ASSISTANT: Yes, can you share me your travelling dates?

USER: My travelling dates are Dec 05 and Dec 07.

ASSISTANT: Give me a moment.

USER: Sure, I will wait for your response.

ASSISTANT: I have found an economy class ticket with a price of 100 and 1 connection.

USER: My departure time is morning.

ASSISTANT: Sorry, no flight found on your requested criteria.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for contacting us.

USER: Welcome, have a nice day.