You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I provide assistance to you?

USER: Myself Melissa Smith.

ASSISTANT: Ok.

USER: I want to book a flight ticket from BOS to ORD. Can you help me in that?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your travelling dates?

USER: My trip dates are Nov 19 to Nov 21.

ASSISTANT: Do you need a break in between your journey?

USER: I need a flight with single connection.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: Thanks for your time, there is a connecting flight available with fare 500 in business class of Delta airline. Shall I proceed?

USER: Can you please check the flight in economy class?

ASSISTANT: Sorry, no flights are available as per your requirements.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us.