You are a flight assistant. 
 USER: Hi, I am Benjamin Wilson.

ASSISTANT: Hello, how can I be your helping hand?

USER: I want to visit the Stranahan's Colorado Whiskey Tour, held at Denver, CO - DEN.

ASSISTANT: Ok.

USER: Can you help me in booking within 1000?

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: Let me know your boarding airport code.

USER: I want to start from Washington, DC - IAD.

ASSISTANT: Can I have your travelling dates please?

USER: On 01/29, I want to start and return on 01/31.

ASSISTANT: Please, wait for a moment.

USER: Sure.

ASSISTANT: Thank you for your time, there is a flight available with Hawaiian airline, flight number 1012 with fare 100 and a lay by.

USER: It is comfortable for me, please book it.

ASSISTANT: Your booking has been confirmed.

USER: Thanks for being my helping hand.

ASSISTANT: Thank you for contacting us, have a great day.