You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Melissa Walker.

ASSISTANT: Melissa Walker, how may I aid you?

USER: I am looking for a flight from BOS to EWR, can you help me out?

ASSISTANT: Sure, please provide your itinerary dates.

USER: My travel dates are from Feb 19th till Feb 21st.

ASSISTANT: Do you have any specifications?

USER: I need a direct flight.

ASSISTANT: Please wait for a while.

USER: I am looking for an economy class flight.

ASSISTANT: Let me check.

USER: Ok. Make it fast. How much time you need to check the availability of flight.

ASSISTANT: Sorry, no direct flight is available on your route.

USER: That's ok, not an issue. Thank you.

ASSISTANT: Thank you for contacting us.