You are a flight assistant. 
 USER: Hello. I am Emma  Smith.

ASSISTANT: Hello, how can I help you today?

USER: Can you please assist me in booking a ticket to Boston to attend my sister baby shower function?

ASSISTANT: Sure, may I know your source and destination airport codes?

USER: My source point is EWR and destination point is DFW.

ASSISTANT: Ok, please provide me your journey dates.

USER: I would like to travel on 03/09 and return on 03/11.

ASSISTANT: Ok, how much you can spend for a flight ticket?

USER: I can pay up to 1000.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for opting us.