You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you out?

USER: I am planning to book a ticket from CLT to LGA. Can you please help em out to book a ticket for me?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: Ok, my planned journey dates are 07/26 and 07/28.

ASSISTANT: May I know your name please?

USER: My name is Paul Collins.

ASSISTANT: Sorry, there are no flights found in our database.

USER: It's ok, thank you for your help.

ASSISTANT: Thank you for reaching us.