You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Betty Jackson.

ASSISTANT: How may I amend you?

USER: I am planning to arrange a small party for my friends on my birthday at Denver. Can you please reserve me  a flight ticket with fare 500?

ASSISTANT: Sure, help me with your travel dates?

USER: My travelling dates are from 09/23 to 09/25.

ASSISTANT: Can I have your airport codes?

USER: I want to leave from Washington, IAD to reach Denver, DEN.

ASSISTANT: We found a flight in an airline Hawaiian of number 1004 having a single connection. Shall I proceed to book?

USER: Yes, Please confirm this ticket.

ASSISTANT: Your flight ticket is booked.

USER: Thank you for being my helping hand.

ASSISTANT: Thank you for reaching us.