You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Jessica Scott here.

ASSISTANT: How may I assist you?

USER: I would like to fly to PHX from ATL, can you book me a ticket?

ASSISTANT: Sure, may I know your price limit?

USER: Ok, please check with 200 price.

ASSISTANT: Do you have any preferable dates?

USER: Yes, my travel dates are 11/18 and 11/20.

ASSISTANT: Sorry, there is no flight as per your details.

USER: No issues, thank you for the help.

ASSISTANT: Thank you for choosing us, have a nice day.