You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you today?

USER: I am Raymond Moore. I am looking for a flight from SEA to PHL, can you help me?

ASSISTANT: When you are planning to travel?

USER: I want to fly on 21 Jan and return on 23 Jan.

ASSISTANT: Do you need any connection limit in between journey?

USER: I need a break in journey.

ASSISTANT: Is there any airline preference for you?

USER: I am comfortable with any class.

ASSISTANT: May I know your departure and arrival timings?

USER: I would like to depart in the evening.

ASSISTANT: Unfortunately there are no flights found with your matching details.

USER: It's ok, not a problem, thank you.

ASSISTANT: Thank you for approaching us.