You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: Myself Joshua Phillips. I want to book a ticket to explore Global culture on 11/02. Would you help me in this?

ASSISTANT: Sure, I can help you.

USER: Ok.

ASSISTANT: Can I know your airport codes?

USER: PHL is my source point and Houston, HOU is the destination point.

ASSISTANT: When would you like to return?

USER: On 11/04, I would like to return.

ASSISTANT: We found a Delta airline, flight number:1012 and the price is 100. Can I reserve it?

USER: Ok.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.