You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am Christopher Taylor.

ASSISTANT: How can I help you today?

USER: Can you help me in booking a flight ticket from ORD to BOS?

ASSISTANT: Sure, I am here to help you in booking. Can you please share your travel dates?

USER: I want to travel on 01/18, and need to catch return flight on 01/20.

ASSISTANT: Do you need any halt in between your journey?

USER: I need a direct flight.

ASSISTANT: Do you have any specification?

USER: I want to depart at morning time.

ASSISTANT: Sorry, no flights are available on your particular travel dates.

USER: Ok, no issues.

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

USER: Thanks for the information.