You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. In which way I can aid you today?

USER: Can you please aid me in reserving a flight ticket to PHX from HOU?

ASSISTANT: Sure, I will aid you with that. Could you please mention your preferable travel dates?

USER: My preferred dates of travel are from Aug 30 to Sept 01.

ASSISTANT: Do you have any preferences regarding timings of your journey?

USER: Yes, I would like to depart in the morning.

ASSISTANT: Do you have any another specifications?

USER: I need a flight which has single stopover.

ASSISTANT: Ok, please wait a moment, I will check flight availability in this route.

USER: Ok.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: Ok, no problem. Thank you.

ASSISTANT: May I know your name for documentation purpose?

USER: I am Jessica Lewis.

ASSISTANT: Thank you for contacting us.