You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How can I be your helping hand?

USER: I am David Jackson.

ASSISTANT: Ok.

USER: I want to attend my friend birthday party at Washington, can you please book me a ticket?

ASSISTANT: Sure, please provide your travelling dates?

USER: I would like to leave between 06/10 and 06/12.

ASSISTANT: Help me with your journey codes?

USER: My airport codes are from BOS to IAD.

ASSISTANT: I found a flight from JetBlue airline of fare 100 and flight number 1011.

USER: Ok, please book this ticket.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you.

ASSISTANT: Thanks for availing us.