You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Melissa Moore.

ASSISTANT: Melissa Moore, how can I render you today?

USER: I want to fly from BOS to EWR. can you help me in booking with a connecting flight?

ASSISTANT: Sure, I am here to help you. May I know your travel dates please?

USER: My travelling dates are from Aug 20 to Aug 22.

ASSISTANT: Ok, do you have any specifications?

USER: I want to return in the morning time.

ASSISTANT: Ok, hold on for a moment. Let me check the best available flight for you.

USER: Sure.

ASSISTANT: Sorry Melissa Moore, there are no flights available on your requested dates.

USER: Ok, No issues. Thank you.

ASSISTANT: Welcome, thank you for choosing us. Have a great day.