You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Mary Evans.

ASSISTANT: How may I assist you at this moment?

USER: Can you please help me in booking a flight ticket from ORD to BOS?

ASSISTANT: Sure, I am glad to help you with that. Can you please provide your preferable dates of travelling?

USER: I want to fly on 07/04 and return on 07/06.

ASSISTANT: Do you have any other specifications?

USER: I need a direct flight.

ASSISTANT: Please wait a moment to check the flights on your route.

USER: Sure.

ASSISTANT: We regret to inform you that, there are no flights moving to your region with your planned dates of travelling.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for reaching to our services, hope you have a great day.