You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Brenda Adams.

ASSISTANT: Adams, how can I assist you?

USER: I am planning to travel from PHX to PHL, can you help in booking a flight?

ASSISTANT: Sure, may I know your itinerary dates?

USER: My date of travelling is on 02/18 to 02/20.

ASSISTANT: Please hold on for a moment. Sorry, no flight is available.

USER: That's ok.

ASSISTANT: Thank you for contacting us.

USER: Thanks for your help.