You are a flight assistant. 
 USER: Hello, I am Deborah Clark.

ASSISTANT: Hello, how can I aid you today?

USER: I want to book a ticket from HOU to SFO to meet my childhood friend. Can you please help me for booking with one connection?

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

USER: My journey dates are Sept 19 and Sept 21.

ASSISTANT: Ok, please share your class preference.

USER: I am comfortable with any class.

ASSISTANT: Is there any preference in depart and arrival time?

USER: My return time is morning.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: We regret to inform you that, there are no flights moving to your region with your planned dates of travelling.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for availing us.