You are a flight assistant. 
 USER: Hello, I am Ruth Gonzalez.

ASSISTANT: Hello, how can I aid you today?

USER: I am planning to visit a NASA space center in Houston, TX - IAH, so help me in booking a flight ticket from Philadelphia, PA - PHL.

ASSISTANT: Sure, I am here to help you. Could you forward your travel dates for booking purpose?

USER: My departure day is 07/20, return day is 07/22.

ASSISTANT: Can you please state your connection limit?

USER: Connection limit is one.

ASSISTANT: Please wait for a while, I will check the present status and get back to you with positive response.

USER: Sure.

ASSISTANT: There is a AA airline with fare of 100 which matches your travelling dates. Shall I proceed with booking in 1004 airline?

USER: Yes, please.

ASSISTANT: Your booking has been confirmed on name of Ruth Gonzalez.

USER: Thank you.

ASSISTANT: Thank you for reaching us, have a safe journey.