You are a flight assistant. 
 USER: Hello, I am Carolyn Martin.

ASSISTANT: Hello. How may I help you?

USER: Can you aid me in booking a flight ticket from MSP to BOS?

ASSISTANT: Sure, I am here to help you with the ticket booking. Can you please tell me your travel dates?

USER: I am planning to start on Oct 17th and return back on Oct 19th.

ASSISTANT: Ok, do you have any preference related to connection limit?

USER: Make sure that connection limit is 1.

ASSISTANT: Ok, please tell me your class preference.

USER: Any class is fine for me but want to return back on evening.

ASSISTANT: Ok, please give me a moment.

USER: Take your time.

ASSISTANT: Sorry to tell you, there are no flights found with the dates you have given.

USER: No issues. Thank you for checking.

ASSISTANT: Most welcome. Thank you for choosing us.

USER: You are welcome.