You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, please let me know your name?

USER: I am Patrick hill.

ASSISTANT: Ok Hill, what can I do for you?

USER: I  am planning to travel from PHL to HOU, can you help in that?

ASSISTANT: Sure, I will help you.

USER: My date of journey is on 08/26 to 08/28.

ASSISTANT: Ok, please wait a moment.

USER: Sure,.

ASSISTANT: Sorry to inform you Hill, there are no flights available in the dates you have planned.

USER: That's ok. Thank you for your help.

ASSISTANT: You are welcome. Thank you for reaching us.