You are a flight assistant. 
 USER: Hello, I am Jeffrey Collins.

ASSISTANT: Hello, How can I provide assistance to you?

USER: Can you please hold me a flight ticket from Washington, DC - IAD to Denver, CO - DEN?

ASSISTANT: Sure, is there any price restriction?

USER: Yes, I can afford up to 200 only.

ASSISTANT: Help me with your trip dates?

USER: My trip dates are 09/02 - 09/04.

ASSISTANT: I found a flight from Hawaiian airline of fare 100 and flight number 1013.

USER: Please reserve.

ASSISTANT: Your flight reservation is done.

USER: Thank you.

ASSISTANT: Thanks for communicating with us.