You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Jack Hernandez here. I am a fan of baseball sport, I am planning to watch a match in Fenway Park in BOS.

ASSISTANT: That's great, can you please provide me your source code?

USER: I want to start from my city airport CO-DEN.

ASSISTANT: Ok, may I know your travelling dates for further proceeding?

USER: My planning dates are from 12/24 to 12/26.

ASSISTANT: Ok Jack, wait a moment.

USER: Ok.

ASSISTANT: As per your given dates of journey, there is a one flight is available for you with 1 connection. Shall I proceed to book?

USER: That's good, please book the ticket. Make sure that price limit is 200.

ASSISTANT: Sorry Jack, there is flight available with the price 300.

USER: Don't proceed in booking my ticket.

ASSISTANT: Sure, sorry for inconvenience.

USER: Anyway, thank you for your immediate response.

ASSISTANT: Welcome. Thank you for choosing us.

USER: You are welcome.