You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, please let me know your name first?

USER: I am Eric Parker, planning to book a flight ticket. Can you help me?

ASSISTANT: Sure, I will help you with booking ticket. Please tell me your trip airport codes from and to?

USER: My airport codes are from PHL to JFK.

ASSISTANT: Ok, please let me know your trip dates?

USER: My travelling dates are from 05/05 to 05/07.

ASSISTANT: Ok Parker, can you give me a moment to check for the flight?

USER: Sure.

ASSISTANT: Sorry for the inconvenience, there are no flights are available with the dates you have planned.

USER: It's ok.

ASSISTANT: Thank you for choosing us.

USER: Thank you.