You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I need to schedule my holiday trip to Dallas to take part in hummer ride tournament, can you please help me in booking?

ASSISTANT: Sure, kindly mention your travel dates.

USER: I will start on 03/05 and my return date will be on 03/07.

ASSISTANT: Can you provide me your airport codes?

USER: My airport codes are from CA-LAX to TX-DFW.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to say, no flight found with your requirement.

USER: Ok, no issue.

ASSISTANT: May I know your name?

USER: Larry Parker is my name.

ASSISTANT: Thanks for reaching us, have a good day.

USER: Thank you.