You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please book the ticket from BOS to HOU? As I'm planning to visit Houston.

ASSISTANT: Sure, may I know your planned travel dates?

USER: Sure, my planned departure and return travel dates are 14th and 16th of April.

ASSISTANT: Do you have any limits on number of connections?

USER: I prefer single connected flight.

ASSISTANT: Do you have any another specifications on your journey?

USER: I prefer economy class to travel.

ASSISTANT: May I know your name for the booking process?

USER: My name is Michael Phillips.

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

USER: That's ok, thank you for giving the information.

ASSISTANT: Welcome, thank you for reaching us.