You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am Christine Clark. I want to book a connecting flight to reach my home, can you help me with booking a return flight in the evening?

ASSISTANT: Sure, I will help you, may I know your travelling dates?

USER: Thank you. My travelling dates are Jan 21 and Jan 23.

ASSISTANT: Can you share me your airport codes?

USER: My airport codes are LAS to JFK.

ASSISTANT: Do you have any airline preference?

USER: No.

ASSISTANT: Thanks for your details, there are no flights found on your data.

USER: Ok, no issues. Thank you for your assistance.

ASSISTANT: Thank you.