You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello. By what way shall I amend you at this moment?

USER: Please book a ticket from San Francisco, CA-SFO to Dallas & Fort Worth, TX-DFW.

ASSISTANT: For booking a ticket, let me know your planned dates.

USER: Departure date is 08/22 and 08/24 is return date.

ASSISTANT: In which name can you book a ticket?

USER: Patricia Wright is the name.

ASSISTANT: Thanks for your name. Wait a minute.

USER: Sure.

ASSISTANT: Unfortunately, we did not get any flights with your data in your route.

USER: Thanks.

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