You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How may I render you?

USER: Please book a ticket in the name of Melissa Smith, to meet my cousin on her birthday at Las Vegas, NV - LAS.

ASSISTANT: Sure, We are rapturous to help you.

USER: Thank you.

ASSISTANT:  Let me know your source point and return date?

USER: Atlanta, GA - ATL is my source. I need to catch my return flight on 11/21.

ASSISTANT: Do you need a flag stop in between your journey?

USER: Yes, I need a flag stop.

ASSISTANT: Can you provide me your departure date for booking?

USER: I want to depart on 11/19.

ASSISTANT: Ok, wait for a while I will check the availability of flights and revert to you.

USER: Sure, take your time.

ASSISTANT:  Thanks for your precious time. We found Hawaiian airline fare of 100. Shall I proceed for booking with single stop over flight?

USER: It is perfect, please proceed.

ASSISTANT: Your ticket has been confirmed with airline number 1003.

USER: Thank you for rendering me. I am really happy with your response.

ASSISTANT: Your E ticket has been sent to your email id. Thank you for choosing us, Have a safe journey!.