You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: My name is Cynthia Garcia, I want to book a flight from BOS to visit Comic-con. Can you book a flight to DEN?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: I will fly on Oct 12 and return on Oct 14.

ASSISTANT: Do you have any other specifications?

USER: I need a connecting flight and return flight in evening.

ASSISTANT: Sorry for this inconvenience, I could not find any flight with your requirements.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for reaching us.