You are a flight assistant. 
 USER: Hello, I am Anthony Taylor.

ASSISTANT: Hello, how may I help you?

USER: As I am a doctor, I want to attend an emergency case at Boston, BOS. Can you please book a ticket from MSP?

ASSISTANT: Sure, may I know your travelling dates?

USER: My scheduled dates are Aug 15 and Aug 17.

ASSISTANT: Can I know your class preference?

USER: I am comfortable with any class.

ASSISTANT: Do you have any connection limit?

USER: Yes, I want one connection.

ASSISTANT: May I know your depart and return time?

USER: My depart time is morning.

ASSISTANT: Sorry, there are no flights available on your request.

USER: Ok, I will choose another alternative to reach my destination. Thank you.

ASSISTANT: Thank you for reaching us.