You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am planning to visit Museum of fine arts in Boston, BOS.

ASSISTANT: Do you need a normal cost airline or low cost airline?

USER: I need a normal-cost airline.

ASSISTANT: Sure, may I know your travelling dates?

USER: My trip dates are July 02 and 04.

ASSISTANT: May I know your source airport codes?

USER: My source is from Denver, DEN.

ASSISTANT: Do you have any requirements?

USER: I need a way station in my journey.

ASSISTANT: Can I have your name?

USER: Sure, Timothy Mitchell.

ASSISTANT: Sorry to say, no flight is available for you as per your requests.

USER: Ok, thank you.

ASSISTANT: Thank you for reaching us.