You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Angela Mitchell here.

ASSISTANT: How may I aid you?

USER: I want to celebrate my mother birthday, can you help me with booking ticket from IAH to LAX?

ASSISTANT: Ok, please share your travelling dates.

USER: I am planning to move on 02/21 and 02/23.

ASSISTANT: The Hawaiian airline with flight number 1000 is available.

USER: Proceed.

ASSISTANT: Your flight ticket is booked.

USER: Thank you for your help.

ASSISTANT: Thank you.