You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Anthony Allen. I am planning to go for a Seattle Scavenger hunt with my cousins, can you please help me in reservation?

ASSISTANT: Sure, please provide me your travel dates.

USER: I would like to travel on 08/23 and return on 08/25.

ASSISTANT: How much is your fare limit for this journey?

USER: I can afford up to 1000.

ASSISTANT: Let me now your airport codes please.

USER: My preferable airport codes are from Los Angeles, LAX to Boston, BOS.

ASSISTANT: Please give me a minute, I will check and revert you soon.

USER: Ok.

ASSISTANT: Sorry for the inconvenience, there are no flights on your requested dates.

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

ASSISTANT: Thank you.