You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you out?

USER: Here Andrew Hall and I have to travel to Philadelphia to attend a seminar, so I need a direct flight from CLT to PHL, can you help me?

ASSISTANT: Sure, I will help you in booking the ticket.

USER: Thank you.

ASSISTANT: May I know your travelling dates please?

USER: I would like to move on 05/19 and back on 05/21.

ASSISTANT: Ok, please wait for a while.

USER: Sure and I got a call that it is going to start with some delay, so please find a flight with connection of 1 in my trip.

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

USER: Ok, no problem with that one, thank you for your help.

ASSISTANT: Thank you for choosing us.

USER: Most welcome.