You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I want to book a flight ticket to Philadelphia with price under 200. Can you help me with it?

ASSISTANT: Sure. May I know your good name?

USER: My name is Jerry Williams.

ASSISTANT: Ok Jerry Williams, may I know when are you planning to travel?

USER: I planned to travel on 12/09 and return on 12/11.

ASSISTANT: Do you need any stop overs in between?

USER: I need a single connection in between the journey.

ASSISTANT: Please let me know your airport codes to check the availability of flights.

USER: Sure. Airport codes are PHX-PHL.

ASSISTANT: Thanks for giving your details. There is no flight available for your requested dates at this moment.

USER: Ok, no issues. Thanks for the help.

ASSISTANT: Thank you for choosing us.