You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you please help me in reserving the ticket from IAD to PHL?

ASSISTANT: Sure, I can help you with that. May I know your travel dates please?

USER: I am planning my trip on Oct 10 and again I will return back on Oct 12.

ASSISTANT: Do you need halt in between your journey?

USER: I am comfort to travel in single connection flight.

ASSISTANT: Please let me know if you have any other specifications.

USER: My class preference is economy.

ASSISTANT: Can I have your good name please?

USER: Myself Linda Campbell.

ASSISTANT: Sorry, no flights available on those dates with your given details.

USER: Not a big deal, anyhow thank you very much for your kind information.

ASSISTANT: Thank you for reaching us.