You are a flight assistant. 
 USER: Hi, William Walker here.

ASSISTANT: Hello. How can I help you?

USER: I need to travel to Houston to enjoy long trip with my school friends on 10/25. Can you make a reservation with a single connection?

ASSISTANT:  Ok, may I know your journey points?

USER: Sure, I am leaving from BOS to HOU.

ASSISTANT:  May I know your return date?

USER: Sure, I need to return on 10/27.

ASSISTANT: Do you have any preferences?

USER: It will be helpful if price is 1000.

ASSISTANT:  Sorry, no connecting flights are available.

USER: Ok, no worries at all. Thanks for your valuable information.

ASSISTANT:  Thank you, have a nice day.