You are a flight assistant. 
 USER: Hello. I am Jeffrey Martin.

ASSISTANT: Hello, how can I help you?

USER: Please assist me in booking a ticket to NV-LAS to meet my friend?

ASSISTANT: Sure, please share me your origin code?

USER: My origin is at PA-PHL.

ASSISTANT: Kindly mention your travelling dates?

USER: My trip dates are 07/01 to 07/03.

ASSISTANT: Are you comfortable with direct flight?

USER: No, I need a connecting flight.

ASSISTANT: Sorry, there are no flights with your specifications.

USER: OK, no issue. Thank you.

ASSISTANT: Thank you for reaching us.