You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: My name is Nicole Martin, I want to book a direct flight to meet my friend at HOU, can you help me with booking?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: May I know, from where would you wish to take off?

USER: My takeoff airport code is PHX.

ASSISTANT: Could you please share your planned journey dates?

USER: My journey dates are Mar 23 and Mar 25.

ASSISTANT: Do you have any specific depart and return time?

USER: My return time is morning.

ASSISTANT: Which class would you prefer for your journey?

USER: I am comfortable with any class.

ASSISTANT: Please, wait for a while.

USER: Sure, please find me a normal-cost flight.

ASSISTANT: I am sorry to inform you that, there is no direct flight available on your route.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for approaching us.