You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I want to book a normal-cost airline to visit my grand father's house. Can you help me to book a connecting flight?

ASSISTANT: Ok, may I know your travelling dates?

USER: I will fly on Nov 16 and return on Nov 18.

ASSISTANT: Can you please mention your depart and arrival airport codes?

USER: My source point is ORD and my destination is ATL.

ASSISTANT: Please tell me your name?

USER: My name is Larry Williams.

ASSISTANT: Sorry, no flights found on your route with your requirements?

USER: Ok, can you recheck is there is any depart flight is in morning and return flight in evening?

ASSISTANT: I have rechecked with that. No tickets available.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for connecting with us.