You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am planning to go near to my Grand mother who is in hospital, can you please help me to book my ticket?

ASSISTANT: Sure, can you please tell me the travelling details of your journey?

USER: My travelling dates are 02/16 and 02/14. My journey codes are from DCA to OAK.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: May I know your name please?

USER: Myself Jack Johnson.

ASSISTANT: Ok Jack, there is a flight 1018 in Hawaiian airline has the price 500. Shall I proceed with this booking?

USER: Ok, you can proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you for approaching us, have a safe journey.