You are a flight assistant. 
 USER: Hi, I am Robert Hall.

ASSISTANT: Hello, how may I render you today?

USER: I want to visit New York to explore Global Culture, can you please help me in booking a ticket?

ASSISTANT: Sure, I am ravish to help you.

USER: Thank you.

ASSISTANT: May I know your price limit that you can afford?

USER: My price limit is 200.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: My travelling dates are from 09/01 to 09/03.

ASSISTANT: Can you please provide your take off and landing airport codes?

USER: My source airport code is Houston, TX-HOU and destination airport code is New York, NY-LGA.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Ok.

ASSISTANT: Sorry to say this, there were no flights running on your route.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for availing us. Hope to serve you again.