You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you now?

USER: Alexander Nelson here, can you please help me to book a flight ticket from IAH to OAK?

ASSISTANT: Sure, I will help you in booking the flight ticket. Can you please mention the travelling dates of your journey?

USER: Ok, my preferred dates of journey are 07/04 and 07/06.

ASSISTANT: Ok, please wait for a while. Thank you for waiting, there is a flight 1006 in Hawaiian airline has the price 100. Can I proceed with this booking?

USER: Please proceed for booking.

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

USER: Thank you for your help.

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