You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello , how can I serve you?

USER: Can you help me book a flight ticket from Boston, MA - BOS to Denver, CO - DEN?

ASSISTANT: Sure, I am glad to help you. Do you need any other specifications?

USER: I choose a connecting flight.

ASSISTANT: On what dates you have planned your journey?

USER: I would like to leave on 03/16 and return on 03/18.

ASSISTANT: May I know your fare limit?

USER: 1000 is my price limit.

ASSISTANT: Please help me with your name.

USER: Debra Lewis is my name.

ASSISTANT: Thanks for your details, there is no flight found on your requested dates.

USER: That's fine, Thank you for the information.

ASSISTANT: Thank you for reaching us.