You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Ronald Adams here. I am planning to meet my friend in Houston. Can you please help me with booking a flight ticket from BOS to IAH?

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

USER: My planned journey dates are July 13 and July 15.

ASSISTANT: Do you have any particular time for departing and returning?

USER: Yes, my depart time should be in afternoon.

ASSISTANT: Do you have any other preferences?

USER: I need a connecting flight in my journey.

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

USER: Not a problem. Thank you for the information.

ASSISTANT: Thank you for reaching us.