You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Ruth Phillips. I am planning to celebrate my birthday with my parents at Denver, help me in booking my flight ticket with one halt.

ASSISTANT: Sure, may I know your travelling dates please?

USER: I am planning to travel from 06/29. My return date is 07/01.

ASSISTANT: Let me know your journey airport codes.

USER: I would like to start from MA-BOS to CO-DEN.

ASSISTANT: How much can you afford for the flight ticket?

USER: I can afford up to 1000.

ASSISTANT: Give me sometime.

USER: Sure.

ASSISTANT: Thank you for your time. There are no flights found according to your requirements.

USER: Its ok, thank you for your service.

ASSISTANT: Thank you for contacting us.