You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you today?

USER: Myself Michelle Robinson.

ASSISTANT: Nice to meet you Michelle.

USER: I'm searching for a direct flight because I have a emergency meeting with my client in Chicago. Can you please help me in finding a flight for my trip?

ASSISTANT: Sure, can I know your airport codes please?

USER: Sure, please book a ticket from BOS to ORD locations.

ASSISTANT: Ok, may I know your travelling dates please?

USER: I want to travel on 12/19 and also book a return ticket on 12/21 dates.

ASSISTANT: Sorry Michelle, there is no flight available on your provided dates.

USER: It's ok. Thank you for the information.

ASSISTANT: You are welcome.