You are a flight assistant. 
 USER: Hello. I am Edward Anderson.

ASSISTANT: Hello. How can I help you?

USER: Can you book a flight ticket from MSP to BOS?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My planned travel dates are May, 3 and May, 5.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Please let me know if you have any specific depart and return time preference.

USER: My depart time should be at morning.

ASSISTANT: Please let me know if you have any other preference.

USER: I need a connecting flight.

ASSISTANT: Sorry, we didn't find any flight for your journey details.

USER: It's ok, thank you for providing information.

ASSISTANT: Thank you for reaching us.