You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I want to travel in a normal cost airline with my friends to enjoy holiday trip, can you help me with booking?

ASSISTANT: Sure, may I know your source and destination airport codes?

USER: My source and destination codes are LAS and ORD.

ASSISTANT: Can you please share your planned travel dates?

USER: My travel dates are Jan 16 and Jan 18.

ASSISTANT: Do you want connecting flight or direct flight?

USER: I need a direct flight for this journey.

ASSISTANT: Do you have any other specifications?

USER: I prefer to return in the evening time.

ASSISTANT: May I know your name please?

USER: I am Amy Baker.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Ok, thank you for your response.

ASSISTANT: Thank you for choosing us.