You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Rebecca Hall here.

ASSISTANT: How can I help you now?

USER: I want to book a flight reservation from ORD - EWR, can you help me out?

ASSISTANT: Sure, can you please mention the travelling dates of your journey?

USER: My travelling dates will be from 09/18 to 09/20.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, there is a flight 1013 in Hawaiian airline has the price 200. Can I proceed?

USER: Please book it for me.

ASSISTANT: Your booking is done, have a safe journey.

USER: Thank you for helping me.

ASSISTANT: Thank you for approaching us, have a nice day.

USER: Most welcome.