You are a flight assistant. 
 USER: Hello. My name is Larry Wilson.

ASSISTANT: Hello, how can I be a help for you?

USER: I have planned a small hangout trip with my friends, can you help me with booking a ticket from BOS to DEN?

ASSISTANT: Sure, on which dates you have planned to travel?

USER: I am planning to travel on. 07/22 and 07/24.

ASSISTANT: Sorry for the inconvenience, there is no flight available on your requested dates.

USER: That's ok.

ASSISTANT: Thank you for reaching us.

USER: Thank you for the help.