You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Anna White.

ASSISTANT: How can I help you?

USER: I am looking for a flight from 05/23 till 05/25. Can you help me out please?

ASSISTANT: Sure, may I know your airport codes please?

USER: My location airport codes are from DCA to LAS.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: Hawaiian airlines is having a flight with travel charge of 100, shall I proceed for booking?

USER: Please proceed with it.

ASSISTANT: Your ticket has been booked with flight-1028, have a safe journey.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.