You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: I am Alexander Davis. I need to attend a cultural festival in Boston so can you please book a flight ticket which should have the connection 0? As it is an emergency trip.

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: Thank you. I need to travel on dates of 02/26 and 02/28.

ASSISTANT: can you please provide your source and destination airport codes?

USER: Sure, I would like to travel from DEN to BOS.

ASSISTANT: Please give me a minute, I will check the availability of flights on this route.

USER: Sure, I will wait for your response.

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

USER: Oh! It is sad to hear. Anyway, thank you for your time.

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

USER: Most welcome.