You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you help me to book a flight ticket from LAX to DFW?

ASSISTANT: Sure, can you share me your travel dates?

USER: Apr, 10 and Apr, 12 are my travel dates.

ASSISTANT: Do you have any connection limit?

USER: I would prefer single connection.

ASSISTANT: Are there any other specifications?

USER: I need to return at afternoon time.

ASSISTANT: Can I know your good name?

USER: Sharon Anderson here.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for reaching us.