You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you for today?

USER: I am Samuel Rodriguez. Can you help me in booking my flight ticket from PHL to IAD?

ASSISTANT: Sure, I will help you with that. Can you please provide your planned dates of journey?

USER: My journey dates will be May 20 to May 22.

ASSISTANT: Please wait for sometime to check the available flight for your journey. Do you have any limitation about the connection limit about your journey?

USER: Make sure that the departure time should be morning with a halt.

ASSISTANT: We regret to say this Samuel Rodriguez, there is no flights on your planned dates of journey.

USER: Its ok. I will find other alternative. Thank you.

ASSISTANT: You are welcome, thank you for reaching us. Hope you have a nice day ahead.