You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I serve you today?

USER: I want to explore the nature at TX- DFW, please book me a connecting flight.

ASSISTANT: Sure, may I know your source code?

USER: My origin airport is NV- LAS.

ASSISTANT: Ok, can you please share on which dates you want to travel there?

USER: I want to fly on 09/08  and return on 09/10.

ASSISTANT: Thank you for the information, sorry to say that there is no flight found with your requirements.

USER: No issues.

ASSISTANT: May I know your name please?

USER: I am Catherine Green.

ASSISTANT: Thank you, have a nice day.

USER: Thank you for your service.