You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I want to book a ticket from EWR to SFO, can you help me?

ASSISTANT: Sure, I am glad to help you. May I know your trip dates?

USER: My travel dates are June 16 and 18.

ASSISTANT: Is there any class preferences?

USER: No.

ASSISTANT: May I know your connection limit?

USER: I am comfortable with any flight.

ASSISTANT: Can you please share your airline preferences?

USER: I want to travel in normal cost airline.

ASSISTANT: Do you have any specifications?

USER: No.

ASSISTANT: May I know your name?

USER: I am Andrew Nelson.

ASSISTANT: Sorry, there are no flights found on your travel dates.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for choosing us.