You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How can I assist you today?

USER: Please book a ticket on the name of Stephen Clark, As I want to attend the horse racing festival which is held at Dallas & Fort Worth, TX - DFW?

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

USER: CA - SFO, San Francisco, is my source. On 07/21, I will return.

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

USER: I want to move on 07/19.

ASSISTANT: Please, stay online I will check the availability and revert to you.

USER: Sure.

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

USER: I am happy with that Southwest airline, please book.

ASSISTANT: Your ticket has been confirmed with airline number 1006.

USER: Thank you for assisting me. You have done a good job.

ASSISTANT: Thank you for approaching us, have a safe journey.