You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Samuel Miller here.

ASSISTANT: How can I help you?

USER: I want to travel from HOU to PHL for my project meeting, can you please help me to book my flight ticket?

ASSISTANT: Yes, I can help you.

USER: Thank you.

ASSISTANT: Can you tell me your dates of travel?

USER: Yes, I will depart on 05/14 and return back on 05/16.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: Sorry to inform you that there are no flights found on your requested dates.

USER: Sad to hear that. Anyway, thank you for the information.

ASSISTANT: Thank you for contacting our agency.