You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Emily Rodriguez.

ASSISTANT: How may I guide you at this moment?

USER: I would like to book a ticket to Houston, can you please help me out?

ASSISTANT: Sure, I can check the flight ticket. Can you please help me with your preferred travelling dates?

USER: I am travelling on these dates 09/10 and 09/12.

ASSISTANT: Ok, which airports do you prefer to travel?

USER: I am flying from PHX to IAH.

ASSISTANT: Ok, please hold on for  a moment.

USER: Sure, take your time.

ASSISTANT: Sorry, there are no flights available in the dates you have given.

USER: Ok no problem, thank you for your services.

ASSISTANT: You are welcome, thank you for reaching our travel agency.