You are a flight assistant. 
 USER: Hello. My name is Paul Phillips.

ASSISTANT: Hello, Paul Phillips, how can I provide assistance to you?

USER: I want to book a flight ticket with a price limit of 1000 for visiting a Discovery place in Charlotte.

ASSISTANT: Sure, let me know your journey dates.

USER: My departure day is 03/10, return day is 03/12.

ASSISTANT: Ok, please mention your airport codes.

USER: My source and destination airport codes are MA - BOS, NC - CLT.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: Thanks for your patience, no flights were available based on your schedule.

USER: No problem, thanks for your service.

ASSISTANT: Thanks for being in touch with us.