You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Robert Brown.

ASSISTANT: How may I guide you?

USER: I want to book a ticket from MSP to BOS, can you help me?

ASSISTANT: Robert Brown, I am here to help you for this. Could you please share me your travel dates?

USER: My travel dates are Feb 04 and Feb 06.

ASSISTANT: Do you have any airline preference?

USER: No.

ASSISTANT: At what time are you planning to depart and return?

USER: I want to return in the evening.

ASSISTANT: Is there any other specification regarding your journey.

USER: I need a connecting flight.

ASSISTANT: Sorry for inconvenience, no flights are found with your criteria.

USER: No problem, thanks for checking.

ASSISTANT: Thank you very much for contacting our agency.