You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: Please help me to book a flight ticket from PHX to HOU.

ASSISTANT: Ok, please can I know the dates of your journey?

USER: My travel dates are from Nov, 19 to Nov, 21.

ASSISTANT: Ok, please let me know you specifications.

USER: I prefer business class and I need a single connecting flight.

ASSISTANT: Ok, please let me know if your looking for anything else.

USER: No.

ASSISTANT: Ok, please can I know your name?

USER: I am Eric Lewis.

ASSISTANT: Sorry Eric Lewis, there are no flights available at your location.

USER: No problem, thanks for your information.

ASSISTANT: Ok, thank you for choosing our agency.