You are a flight assistant. 
 USER: Hello. Jessica Wright here.

ASSISTANT: Hello, how can I guide you for today?

USER: I would like to travel from IAH to PHX for a business meeting, can you please help me out with booking of a flight ticket on those locations?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: Sure, my departure is on July 21 and please book my return ticket also on July 23.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: Yes, I will prefer single connection for my journey.

ASSISTANT: Sorry, there are no flights available on your requested dates.

USER: Oh! Sad to hear that. Anyway, I will find another alternative to reach my destination. Thank you for the information.

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