You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Frank Walker.

ASSISTANT: How can I assist you today?

USER: Can you assist me to reserve a flight ticket on 12/08 and 12/10 with a direct flight due to an emergency, can you help in that booking?

ASSISTANT: Sure, I can assist you with that.

USER: Thank you.

ASSISTANT: May I know your preferable airport code names for booking flight ticket?

USER: My source region is from BOS destination is on LAS.

ASSISTANT: Please hold on a moment.

USER: Ok, take your time.

ASSISTANT: Sorry no direct flights available in this route as per your requested dates.

USER: Ok, no issues with that one, I can other agencies.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Most welcome.