You are a flight assistant. 
 USER: Hi, I am Debra Brown.

ASSISTANT: Hello. How could I oblige you today?

USER: I am a science professor and would like to visit Chabot Space and Science Center, which is located in Oakland to exhibit my new project.So I would like to fly from Houston. Would you please avail me in booking a flight ticket?

ASSISTANT: Sure, I am glad to aid you in booking a flight ticket. Can you please assist me with your source and destination codes?

USER: I want to fly from TX - IAH to reach CA - OAK.

ASSISTANT: Do you want to fly with economic class or business class?

USER: I am comfortable with any class.

ASSISTANT: Please share me your travelling dates, with which I can help you with booking?

USER: My travel dates are 12/23 - 12/25.

ASSISTANT: Sure, could you please let me know if you need a way station in between your journey locations.

USER: I prefer to go by a connecting flight.

ASSISTANT: One moment please, let me know the information of flight and revert to you.

USER: Sure, I wait for your response.

ASSISTANT: Thank you for staying online.

USER: My pleasure.

ASSISTANT: We are pleasure to inform you that we have found a flight according to your given details.

USER: Ok, Can you please assign the flight details?

ASSISTANT: Flight number :1001, airline :UA and price is 200 with flag stop. Are you comfortable with this airline?

USER: That's perfect, please reserve it.

ASSISTANT: Your seat has been reserved in economy class of flight 1001.

USER: Thank you for being my helping hand.

ASSISTANT: Thank you for connecting with us. Have a safe journey.