You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Samantha Lee here.

ASSISTANT: Lee, how can I help you today?

USER: I need your help in booking of a flight ticket from PHL to EWR for an important business meeting, can you please help me out with booking of a flight ticket on those locations?

ASSISTANT: Sure, I am glad to help you. Can you please provide me your trip dates?

USER: Sure, I am planning to move on 05/12 and please book my return ticket on 05/14.

ASSISTANT: Ok, please be on hold for a moment.

USER: Sure, take your time.

ASSISTANT: Sorry Lee, there are no flights available on your preferred dates.

USER: Oh! So sad to hear. Anyway, thank you for the information.

ASSISTANT: Thank you for reaching us and have a nice day.

USER: Welcome.