You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Debra Clark here. I want to book a ticket from DCA to LGA. Could you help me?

ASSISTANT: Sure, please share me your travelling dates?

USER: My preferable dates are from 01/06 to 10/08.

ASSISTANT: Do you have any specifications?

USER: Yes, I need a halt in between my journey.

ASSISTANT: Please re verify your dates?

USER: Sorry, my return date is 01/08.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, there were no flights with your specifications.

USER: That's ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.