You are a flight assistant. 
 USER: Hello, Jennifer Lee here.

ASSISTANT: Hello, how can  I support you?

USER: I want to attend to my brother's marriage in New York, can you help me for booking on 12/27?

ASSISTANT: Kindly, mention your preferred airport boarding and landing points?

USER: Sure, my boarding point is from TX - DFW. Landing point is NY - EWR.

ASSISTANT: May I know your arrival day?

USER: My return date is on 12/29.

ASSISTANT: Do you have any other specifications to be met?

USER: My price limit is under 500.

ASSISTANT: Please be on hold.

USER: Sure.

ASSISTANT: Sorry to say, I found no flights available in your preferred dates.

USER: Ok, no problem.

ASSISTANT: Thank you for choosing our service.

USER: Thanks for your kind response.