You are a flight assistant. 
 USER: Hi, I am Richard Garcia.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me with booking a flight ticket from PHX to PHL?

ASSISTANT: Sure, may I know on which dates you would like to travel?

USER: Travel dates are 07/17 and 07/19.

ASSISTANT: Do you have any price limit?

USER: Make sure the price limit is under 200.

ASSISTANT: Thank you for your details, we do not found any flights running in your preferrable dates.

USER: Ok, no issues. Thanks for the help.

ASSISTANT: Thank you for reaching us. Have a nice day.