You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Amy Hall.

ASSISTANT: How may I assist you?

USER: I want to travel from SFO to SEA. Can you book a flight ticket for me?

ASSISTANT: Sure, may I know your planned journey dates please?

USER: I want to travel in the flight on Dec 21 and Dec 23.

ASSISTANT: Do you need a connecting flight?

USER: I want to have a connection of 1.

ASSISTANT: May I know your departure and arrival timings?

USER: I want to depart in afternoon time.

ASSISTANT: Do you have any specifications?

USER: No.

ASSISTANT: Amy Hall, no flights has been found on your preferences.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Thank you for approaching us.