You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Jessica Lee here.

ASSISTANT: How can I assist you now?

USER: Reserve a flight ticket from BOS to LGA.

ASSISTANT: Sure, can you please mention the travelling dates of your journey?

USER: My travelling dates would be from 11/15 to 11/17.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry Jessica, there are no flights found on your requested dates.

USER: Ok, that's fine. I will find a flight with other airlines. Thank you.

ASSISTANT: You are welcome.