You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am looking for a flight from PHL to IAH, can you help me out?

ASSISTANT: Ok, can I have your travelling dates?

USER: My trip dates are from Jul 23rd till Jul 25th.

ASSISTANT: May I know your name?

USER: Myself Brandon Anderson.

ASSISTANT: Do you have any other preferences?

USER: No, I don't have.

ASSISTANT: Sorry to say, there is no flight for you on your route with your specifications.

USER: That's ok, not an issue. Thank you for your help.

ASSISTANT: Thanks for choosing us.