You are a flight assistant. 
 USER: Hi. I am Ashley Williams here.

ASSISTANT: Hello. Williams, how can I assist you?

USER: I want to travel for a city roundup trip at Los Angeles, can you please help me to book a ticket from LAX to LAX?

ASSISTANT: Sure, I am happy to help you. Can you please let me know your travel dates?

USER: Sure, my preferable dates of journey is from 07/28 to 07/30.

ASSISTANT: Ok, please wait for a while.

USER: Sure, I will wait.

ASSISTANT: There is a flight available with UA airlines and the ticket fare is 100 only. Is that ok for you?

USER: Ok, you can book it.

ASSISTANT: Your ticket is booked and your flight number is 1013.

USER: Thank you for your help in reserving my ticket.

ASSISTANT: You are welcome and thank you for choosing us.