You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

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

ASSISTANT: Sure, kindly share your travel dates.

USER: I want to travel in the flight on Jan 27 and Jan 29.

ASSISTANT: Do you have any connection limit?

USER: I want to have a connection of 1.

ASSISTANT: Please share your name.

USER: I am Pamela Baker.

ASSISTANT: There is a flight with your requirement, airline is United Airlines with price 100 and single connection.

USER: I want to return in evening time.

ASSISTANT: Sorry, no flights available in the evening time.

USER: That's ok. Anyways, thank you.

ASSISTANT: Thanks for reaching us.