You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Nancy Anderson.

ASSISTANT: How can I help you?

USER: I have a business meeting in Houston, can you help me for booking a flight ticket from PHL to HOU?

ASSISTANT: Ok, may I know your travelling dates?

USER: My travelling dates are Feb 19 and Feb 21.

ASSISTANT: Can you please tell me your depart and arrival timings of your journey?

USER: My departure time is morning.

ASSISTANT: Do you need connecting flight?

USER: I need a single connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Ok, please wait.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry, no flights found on your route with your requirements.

USER: That's ok, thank you for checking.

ASSISTANT: Most welcome.