You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Catherine Wright.

ASSISTANT: How can I help you?

USER: I want to travel from IAH to OAK. Can you help me in booking a flight ticket?

ASSISTANT: Let me know your travelling dates?

USER: I want to depart on 19th of march and return by march 21.

ASSISTANT: Connecting flight can be booked with airline JetBlue for price 100.

USER: I am looking for economy class ticket.

ASSISTANT: Shall I book a ticket?

USER: Yes, if it is in economy class.

ASSISTANT: Sure. Ticket is booked having flight number 1001.

USER: Thank you for your help.

ASSISTANT: Thanks.