You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am planning to attend my cousin wedding in LGA, can you please help me in booking a direct flight?

ASSISTANT: Let me know your travelling dates.

USER: I want to fly on Dec 12 and return on Dec 14.

ASSISTANT: Can I know your boarding airport code?

USER: My source point is LAS.

ASSISTANT: Let me know your name.

USER: I am Jacob Williams.

ASSISTANT: Sorry, no flights found for your travelling dates.

USER: Not an issue. Thank you.

ASSISTANT: Thank you.