You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am planning to book a flight ticket to BOS from DEN, can you please help me out?

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

USER: Sure, my planned travelling dates are May 21 and May 23.

ASSISTANT: May I know your name please?

USER: Sure, my name is Jessica Mitchell.

ASSISTANT: Is there any other specification's regarding your journey?

USER: Yes, I am looking for a flight with 1 connection.

ASSISTANT: Do you have any criteria?

USER: No.

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

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

ASSISTANT: Thank you very much for contacting our agency.