You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, may I know your name?

USER: I am Frank Hall.

ASSISTANT: How may I serve you?

USER: I would like to return from DEN on 08/20 after attending a meeting. Can you help me book a flight ticket?

ASSISTANT: Sure, may I know your source details?

USER: My origin is CLT.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: May I know your price preference?

USER: 500 is my price limit.

ASSISTANT: May I know your return date?

USER: I need depart on 08/18.

ASSISTANT: Give me some time.

USER: Ok.

ASSISTANT: Thanks for waiting, there is a Hawaiian airline, flight number-1029 with one connection matches your requirement.

USER: Ok, proceed for booking with this airline.

ASSISTANT: Thanks for contacting us, have a safe flight.

USER: Thank you for your response.