You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I aid you?

USER: I am Robert Moore. I want to visit to PHL on 02/21,will you help me in reserving of my tickets?

ASSISTANT: Sure, may I know your source airport code?

USER: I would like to start my journey from PHL to LAS.

ASSISTANT: Please mention your return date.

USER: My returning date is 02/23.

ASSISTANT: Do you have any connection limit?

USER: Yeah,I want single connected flight.

ASSISTANT: Ok, thank you for mentioning your essential details. We found a Hawaiian airline according to your requirements with flight number 1015 and price of 100.

USER: Please proceed.

ASSISTANT: Ok, your reservation has been confirmed.

USER: Thank you so much for your help.

ASSISTANT: Thank you for picking us and have a great day.