You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am planning to visit Houston to attend my brother's convocation, can you please book me a ticket from LGA to HOU?

ASSISTANT: Sure, can you share your departure and return dates please?

USER: My preferable journey dates are from 06/17 to 06/19.

ASSISTANT: There is a flight available with travel charge of 300, is that ok for you?

USER: Please find a flight which offers under 200 fare of ticket.

ASSISTANT: Sorry to inform you no airlines are providing the flights having ticket fare within 200.

USER: Ok, not an issue. I will find any alternate for this trip.

ASSISTANT: May I know your name for our recordings?

USER: My name is Samantha Walker. Thank you for providing information.

ASSISTANT: Thank you for choosing us, Samantha.