You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Patricia Mitchell. Can you please help me to book a ticket from BOS to ATL?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: My travelling dates are on Aug 06 and Aug 08.

ASSISTANT: Do you have any specifications?

USER: I have to return in the evening.

ASSISTANT: Do you have any preferences about class?

USER: No.

ASSISTANT: Do you have any other preferences?

USER: I need a single connection.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no flights found under your preferable details.

USER: Ok, not a problem. Thank you.

ASSISTANT: Welcome, have a great day.