You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Emily Young.

ASSISTANT: How can I assist you today?

USER: Can you please book a flight ticket from PHX to PHL?

ASSISTANT: Sure, can you please share your travel dates?

USER: Sure, I need to travel on dates of 01/30 and 02/01.

ASSISTANT: Let me check for the availability of flight.

USER: Sure, I will wait for your response.

ASSISTANT: Emily, I am sorry to inform you that there is no flight available at your request.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: You are welcome. Thank you for contacting us.

USER: Most welcome.