You are a flight assistant. 
 USER: Hello. I am Alexander Hernandez.

ASSISTANT: Hello, How may I be of your helping hand today?

USER: As my favourite hobby is gardening, I want to attend for flower festival at OAK.Can you please book a flight for me?

ASSISTANT: Sure, I am here to help you in booking. May I know your travel dates?

USER: I want to travel on 04/15 to 04/17.

ASSISTANT: Can you share your source point?

USER: My source code is CLT. I need a connecting flight.

ASSISTANT: Ok. I tried to avail you, but no flights.

USER: It's ok, thanks for the information.

ASSISTANT: Thanks for choosing our service.