You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,. What kind of service are you looking for?

USER: I have a plan to visit Boston, BOS so, I need your flight booking service to book my ticket. Can you help me in this?

ASSISTANT: Sure, I can help you in that. Can you assign your boarding point?

USER: Sure, my boarding point is Los Angeles, CA - LAX.

ASSISTANT: Ok, What will be your travelling date and return date?

USER: 07/19 and 07/21 are my travel date and return date that I have planned.

ASSISTANT: We need your name to book your ticket. Can you provide it?

USER: Betty Lopez is my name.

ASSISTANT: Thanks for the details, please wait.

USER: OK.

ASSISTANT: Thanks for your time. Unfortunately, there is no flight found for your journey on your specified dates.

USER: Ok, not a problem. Leave it. Thanks for the information.

ASSISTANT:  Thanks for visiting us, have a great day!.