You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I need to book my ticket from LAX to DFW. Can you please help me with booking?

ASSISTANT: Sure, I am here to help you for this. When would you like to travel?

USER: I would like to start my journey on July 02 and return back on July 04.

ASSISTANT: Do you have any specifications regarding your journey?

USER: No, I din't have any other specifications.

ASSISTANT: Please wait for a while.

USER: Sure, I will wait for your response.

ASSISTANT: May I know your name please?

USER: Sure, my name is Steven Clark.

ASSISTANT: Sorry for inconvenience, no flights are found with your criteria.

USER: Not an issue, anyway thank you for the information.

ASSISTANT: Thank you very much for contacting our agency.

USER: Thank you for your service.