You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am planning to visit my friend's house. Can you book a flight on 27th Aug?

ASSISTANT: Sure, I am here to help you in booking. Can you please share your travelling airport codes?

USER: My source point is HOU and my destination is PHX.

ASSISTANT: Ok, may I know your return date?

USER: I will return on Aug 29.

ASSISTANT: Can you please mention your name?

USER: My name is Helen Wright.

ASSISTANT: Let me know your connection limit.

USER: I like to travel in connecting flight.

ASSISTANT: Do you have any specification?

USER: No.

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

USER: Ok, thank you for the details.

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